**Number range CHAPTERSection III. Public Notice Rule - Primacy Revision
Crosswalk Example Format**

The Primacy Revision Crosswalk will be used by EPA in determining,
section by section, whether the State regulations are as stringent as
the federal regulations.

The revised PN Rule amended the Consumer Confidence Report (CCR) rule as
well as various provisions in 40 CFR Part 141 to be consistent with the
final Public Notification Regulation. All of the sections in 40 CFR Part
141 affected by these changes are listed first in the PN crosswalk
beginning on the following page.

+------------------------------+-------------+------------+-----------+
| **Primacy Revision Crosswalk |             |            |           |
| for the PN Rule**            |             |            |           |
+==============================+=============+============+===========+
| **FEDERAL**                  | **FEDERAL   | **STATE    | **If      |
|                              | CITATION**  | CITATION** | different |
| **REQUIREMENT**              |             |            | than      |
|                              |             | *          | federal   |
|                              |             | **Document | requ      |
|                              |             | title;     | irement** |
|                              |             | page #;    |           |
|                              |             | and***     | **note    |
|                              |             |            | here and  |
|                              |             | ***§ or    | explain   |
|                              |             | ¶***       | on        |
|                              |             |            | separate  |
|                              |             |            | sheet**   |
+------------------------------+-------------+------------+-----------+
| **SUBPART B - MAXIMUM        |             |            |           |
| CONTAMINANT LEVELS**         |             |            |           |
+------------------------------+-------------+------------+-----------+
| **§141.11- Maximum           |             |            |           |
| Contaminant Levels for       |             |            |           |
| Inorganic Chemicals**        |             |            |           |
+------------------------------+-------------+------------+-----------+
| The non-community water      | §1          |            |           |
| system is meeting the public | 41.11(d)(2) |            |           |
| notification requirements    |             |            |           |
| under §141.209, including    |             |            |           |
| continuous posting of the    |             |            |           |
| fact that nitrate levels     |             |            |           |
| exceed 10 mg/l and the       |             |            |           |
| potential health effects of  |             |            |           |
| exposure; and                |             |            |           |
| ~\*\ \*\ \*\ \*~             |             |            |           |
+------------------------------+-------------+------------+-----------+
| **SUBPART C - MONITORING AND |             |            |           |
| ANALYTICAL REPORTING         |             |            |           |
| REQUIREMENTS**               |             |            |           |
+------------------------------+-------------+------------+-----------+
| **§141.21 - Coliform         |             |            |           |
| Sampling; and**              |             |            |           |
|                              |             |            |           |
| **§141.22 - Turbidity        |             |            |           |
| Sampling and Analytical      |             |            |           |
| Requirements**               |             |            |           |
+------------------------------+-------------+------------+-----------+
| Amended by revising          | §1          |            |           |
| "§141.32\" to read "Subpart  | 41.21(g)(1) |            |           |
| Q" in §141.21(g)(1) and      |             |            |           |
| (g)(2) and §141.22(b)        | §1          |            |           |
|                              | 41.21(g)(2) |            |           |
|                              |             |            |           |
|                              | §141.22(b)  |            |           |
+------------------------------+-------------+------------+-----------+
| **§141.23 - Inorganic        |             |            |           |
| Chemical Sampling and        |             |            |           |
| Analytical Requirements**    |             |            |           |
+------------------------------+-------------+------------+-----------+
| Amended by revising          | §141.23(n)  |            |           |
| "§141.32\" to read "Subpart  |             |            |           |
| Q" in §141.23(n) and (o)     | §141.23(o)  |            |           |
+------------------------------+-------------+------------+-----------+
| Where nitrate or nitrite     | §1          |            |           |
| sampling results indicate an | 41.23(f)(2) |            |           |
| exceedance of the maximum    |             |            |           |
| contaminant level, the       |             |            |           |
| system shall take a          |             |            |           |
| confirmation sample within   |             |            |           |
| 24 hours of the system's     |             |            |           |
| receipt of notification of   |             |            |           |
| the analytical results of    |             |            |           |
| the first sample. Systems    |             |            |           |
| unable to comply with the    |             |            |           |
| 24-hour sampling requirement |             |            |           |
| must immediately notify      |             |            |           |
| persons served by the public |             |            |           |
| water system in accordance   |             |            |           |
| with §141.202 and meet other |             |            |           |
| Tier 1 public notification   |             |            |           |
| requirements under Subpart Q |             |            |           |
| of this part. Systems        |             |            |           |
| exercising this option must  |             |            |           |
| take and analyze a           |             |            |           |
| confirmation sample within   |             |            |           |
| two weeks of notification of |             |            |           |
| the analytical results of    |             |            |           |
| the first sample.            |             |            |           |
+------------------------------+-------------+------------+-----------+

+------------------------------+-------------+------------+-----------+
| **§141.24 - Organic          |             |            |           |
| Chemicals Other Than Total   |             |            |           |
| Trihalomethanes, Sampling    |             |            |           |
| and Analytical               |             |            |           |
| Requirements**               |             |            |           |
+==============================+=============+============+===========+
| Amended by removing          | §141.24(    |            |           |
| §141.24(f)(15)(iii) and      | f)(15)(iii) |            |           |
| §141.24(h)(11)(iii)          | §141.24(    |            |           |
|                              | h)(11)(iii) |            |           |
+------------------------------+-------------+------------+-----------+
| **§141.26 - Monitoring       |             |            |           |
| Frequency for Radioactivity  |             |            |           |
| in Community Water Systems;  |             |            |           |
| and**                        |             |            |           |
|                              |             |            |           |
| **§141.30 - Total            |             |            |           |
| Trihalomethanes Sampling,    |             |            |           |
| Analytical, and Other        |             |            |           |
| Requirements**               |             |            |           |
+------------------------------+-------------+------------+-----------+
| Amended by revising          | §1          |            |           |
| "§141.32\" to read "Subpart  | 41.26(a)(4) |            |           |
| Q"                           |             |            |           |
|                              | §1          |            |           |
|                              | 41.26(b)(5) |            |           |
|                              |             |            |           |
|                              | §141.30(d)  |            |           |
+------------------------------+-------------+------------+-----------+
| **SUBPART D - REPORTING AND  |             |            |           |
| RECORDKEEPING**              |             |            |           |
+------------------------------+-------------+------------+-----------+
| **§141.31- Reporting         |             |            |           |
| Requirements**               |             |            |           |
+------------------------------+-------------+------------+-----------+
| The public water system,     | §141.31(d)  |            |           |
| within 10 days of completing |             |            |           |
| the public notification      |             |            |           |
| requirements under Subpart Q |             |            |           |
| of this part for the initial |             |            |           |
| public notice and any repeat |             |            |           |
| notices, must submit to the  |             |            |           |
| primacy agency a             |             |            |           |
| certification that it has    |             |            |           |
| fully complied with the      |             |            |           |
| public notification          |             |            |           |
| regulations. The public      |             |            |           |
| water system must include    |             |            |           |
| with this certification a    |             |            |           |
| representative copy of each  |             |            |           |
| type of notice distributed,  |             |            |           |
| published, posted, and made  |             |            |           |
| available to persons served  |             |            |           |
| by the system and to the     |             |            |           |
| media.                       |             |            |           |
+------------------------------+-------------+------------+-----------+
| **§141.33 - Record           |             |            |           |
| Maintenance**                |             |            |           |
+------------------------------+-------------+------------+-----------+
| Copies of public notices     | §141.33(e)  |            |           |
| issued pursuant to Subpart Q |             |            |           |
| and certifications made to   |             |            |           |
| the primacy agency pursuant  |             |            |           |
| to §141.31 must be kept for  |             |            |           |
| three years after issuance.  |             |            |           |
+------------------------------+-------------+------------+-----------+

+------------------------------+-------------+------------+-----------+
| > **SUBPART G - NATIONAL     |             |            |           |
| > REVISED PRIMARY DRINKING   |             |            |           |
| > WATER REGULATIONS:**       |             |            |           |
| >                            |             |            |           |
| > **MAXIMUM CONTAMINANT      |             |            |           |
| > LEVELS AND**               |             |            |           |
| >                            |             |            |           |
| > **MAXIMUM RESIDUAL         |             |            |           |
| > DISINFECTANT LEVELS**      |             |            |           |
+==============================+=============+============+===========+
| **§141.63 - Maximum          |             |            |           |
| Contaminant Levels for       |             |            |           |
| Microbiological              |             |            |           |
| Contaminants**               |             |            |           |
+------------------------------+-------------+------------+-----------+
| Amended by revising          | §141.63(b)  |            |           |
| "§141.32" to read "Subpart   |             |            |           |
| Q" in §141.63(b)             |             |            |           |
+------------------------------+-------------+------------+-----------+
| **SUBPART H - FILTRATION AND |             |            |           |
| DISINFECTION**               |             |            |           |
+------------------------------+-------------+------------+-----------+
| **§141.75 - Reporting and    |             |            |           |
| Recordkeeping Requirements** |             |            |           |
+------------------------------+-------------+------------+-----------+
| If at any time the turbidity | §141.7      |            |           |
| exceeds 5 NTU, the system    | 5(a)(5)(ii) |            |           |
| must consult with the        |             |            |           |
| primacy agency as soon as    |             |            |           |
| practical, but no later than |             |            |           |
| 24 hours after the           |             |            |           |
| exceedance is known, in      |             |            |           |
| accordance with the public   |             |            |           |
| notification requirements    |             |            |           |
| under §141.203(b)(3).        |             |            |           |
+------------------------------+-------------+------------+-----------+
| If at any time the turbidity | §141.7      |            |           |
| exceeds 5 NTU, the system    | 5(b)(3)(ii) |            |           |
| must consult with the        |             |            |           |
| primacy agency as soon as    |             |            |           |
| practical, but no later than |             |            |           |
| 24 hours after the           |             |            |           |
| exceedance is known, in      |             |            |           |
| accordance with the public   |             |            |           |
| notification requirements    |             |            |           |
| under §141.203(b)(3).        |             |            |           |
+------------------------------+-------------+------------+-----------+
| **SUBPART L - DISINFECTANT   |             |            |           |
| RESIDUALS, DISINFECTION      |             |            |           |
| BYPRODUCTS,**                |             |            |           |
|                              |             |            |           |
| **AND DISINFECTION BYPRODUCT |             |            |           |
| PRECURSORS**                 |             |            |           |
+------------------------------+-------------+------------+-----------+
| **§141.133 - Compliance      |             |            |           |
| Requirements**               |             |            |           |
+------------------------------+-------------+------------+-----------+
| Amended by revising          | §141.1      |            |           |
| "§141.32" to read "Subpart   | 33(b)(1)(i) |            |           |
| Q" in §141.133(b)(1)(i),     |             |            |           |
| (b)(1(iii), (b)(2), (b)(3),  | §141.133    |            |           |
| and (c)(1)(i)                | (b)(1)(iii) |            |           |
|                              |             |            |           |
|                              | §14         |            |           |
|                              | 1.133(b)(2) |            |           |
|                              |             |            |           |
|                              | §14         |            |           |
|                              | 1.133(b)(3) |            |           |
|                              |             |            |           |
|                              | §141.1      |            |           |
|                              | 33(c)(1)(i) |            |           |
+------------------------------+-------------+------------+-----------+
| Amended by                   | §141.1      |            |           |
| rev                          | 33(c)(2)(i) |            |           |
| ising"§141.32(a)(1)(iii)(E)" |             |            |           |
| (which appears twice) to     |             |            |           |
| read "Subpart Q" in          |             |            |           |
| §141.133(c)(2)(i)            |             |            |           |
+------------------------------+-------------+------------+-----------+
| Amended by revising          | §141.13     |            |           |
| "§141.32(e)(78)" to read     | 3(c)(2)(ii) |            |           |
| "Subpart Q" in               |             |            |           |
| §141.133(c)(2)(ii)           |             |            |           |
+------------------------------+-------------+------------+-----------+
| **SUBPART O - CONSUMER       |             |            |           |
| CONFIDENCE REPORTS**         |             |            |           |
+------------------------------+-------------+------------+-----------+
| **§141.153 - Content of the  |             |            |           |
| Reports**                    |             |            |           |
+------------------------------+-------------+------------+-----------+
| A report that contains data  | §14         |            |           |
| on contaminants that EPA     | 1.153(c)(3) |            |           |
| regulates using any of the   |             |            |           |
| following terms must include |             |            |           |
| the applicable definitions:  |             |            |           |
| \*\*\*                       |             |            |           |
+------------------------------+-------------+------------+-----------+
| Maximum residual             | §141.153    |            |           |
| disinfectant level goal or   | (c)(3)(iii) |            |           |
| MRDLG: The level of a        |             |            |           |
| drinking water disinfectant  |             |            |           |
| below which there is no      |             |            |           |
| known or expected risk to    |             |            |           |
| health. MRDLGs do not        |             |            |           |
| reflect the benefits of the  |             |            |           |
| use of disinfectants to      |             |            |           |
| control microbial            |             |            |           |
| contaminants.                |             |            |           |
+------------------------------+-------------+------------+-----------+
| Maximum residual             | §141.15     |            |           |
| disinfectant level or MRDL:  | 3(c)(3)(iv) |            |           |
| The highest level of a       |             |            |           |
| disinfectant allowed in      |             |            |           |
| drinking water. There is     |             |            |           |
| convincing evidence that     |             |            |           |
| addition of a disinfectant   |             |            |           |
| is necessary for control of  |             |            |           |
| microbial contaminants.      |             |            |           |
+------------------------------+-------------+------------+-----------+
| Contaminants subject to an   | §141.1      |            |           |
| MCL, action level, maximum   | 53(d)(1)(i) |            |           |
| residual disinfectant level, |             |            |           |
| or treatment technique       |             |            |           |
| (regulated contaminants).    |             |            |           |
+------------------------------+-------------+------------+-----------+
| The likely source(s) of      | §141.15     |            |           |
| detected contaminants to the | 3(d)(4)(ix) |            |           |
| best of the operator's       |             |            |           |
| knowledge. Specific          |             |            |           |
| information regarding        |             |            |           |
| contaminants may be          |             |            |           |
| available in sanitary        |             |            |           |
| surveys and source water     |             |            |           |
| assessments, and should be   |             |            |           |
| used when available to the   |             |            |           |
| operator. If the operator    |             |            |           |
| lacks specific information   |             |            |           |
| on the likely source, the    |             |            |           |
| report must include one or   |             |            |           |
| more of the typical sources  |             |            |           |
| for that contaminant listed  |             |            |           |
| in Appendix A to this        |             |            |           |
| subpart that are most        |             |            |           |
| applicable to the system.    |             |            |           |
+------------------------------+-------------+------------+-----------+
| The table(s) must clearly    | §14         |            |           |
| identify any data indicating | 1.153(d)(6) |            |           |
| violations of MCLs, MRDLs,   |             |            |           |
| or treatment techniques, and |             |            |           |
| the report must contain a    |             |            |           |
| clear and readily            |             |            |           |
| understandable explanation   |             |            |           |
| of the violation including:  |             |            |           |
| the length of the violation, |             |            |           |
| the potential adverse health |             |            |           |
| effects, and actions taken   |             |            |           |
| by the system to address the |             |            |           |
| violation. To describe the   |             |            |           |
| potential health effects,    |             |            |           |
| the system must use the      |             |            |           |
| relevant language of         |             |            |           |
| Appendix A to this subpart.  |             |            |           |
+------------------------------+-------------+------------+-----------+
| Lead and copper control      | §14         |            |           |
| requirements prescribed by   | 1.153(f)(3) |            |           |
| Supbart I of this part. For  |             |            |           |
| systems that fail to take    |             |            |           |
| one or more actions          |             |            |           |
| prescribed by §§ 141.80(d),  |             |            |           |
| 141.81, 141.82, 141.83, or   |             |            |           |
| 141.84, the report must      |             |            |           |
| include the applicable       |             |            |           |
| language of Appendix A to    |             |            |           |
| this subpart for lead,       |             |            |           |
| copper, or both.             |             |            |           |
+------------------------------+-------------+------------+-----------+
| Treatment techniques for     | §14         |            |           |
| acrylamide, epichlorohydrin  | 1.153(f)(4) |            |           |
| prescribed by Subpart K of   |             |            |           |
| this part. For systems that  |             |            |           |
| violate the requirements of  |             |            |           |
| Subpart K of this part, the  |             |            |           |
| report must include the      |             |            |           |
| relevant language from       |             |            |           |
| Appendix A to this subpart.  |             |            |           |
+------------------------------+-------------+------------+-----------+
| **§141.154 - Required        |             |            |           |
| Additional Health            |             |            |           |
| Information**                |             |            |           |
+------------------------------+-------------+------------+-----------+
| Community water systems that | §141.154(e) |            |           |
| detect TTHM above 0.080      |             |            |           |
| mg/l, but below the MCL in   |             |            |           |
| §141.12, as an annual        |             |            |           |
| average, monitored and       |             |            |           |
| calculated under provisions  |             |            |           |
| of §141.30, must include     |             |            |           |
| health effects language for  |             |            |           |
| TTHMs prescribed by Appendix |             |            |           |
| A.                           |             |            |           |
+------------------------------+-------------+------------+-----------+

+------------------------------+-------------+------------+-----------+
| **§141.155 - Report Delivery |             |            |           |
| and Recordkeeping**          |             |            |           |
+==============================+=============+============+===========+
| Any system subject to this   | §141.155(h) |            |           |
| subpart must retain copies   |             |            |           |
| of its Consumer Confidence   |             |            |           |
| Report for no less than 3    |             |            |           |
| years                        |             |            |           |
+------------------------------+-------------+------------+-----------+
| **Appendix A to Subpart O**  |             |            |           |
+------------------------------+-------------+------------+-----------+
| Appendices A, B, and C to    | Appendices  |            |           |
| Subpart O (published with    |             |            |           |
| the final CCR Rule)          | A, B, and C |            |           |
| contained various pieces of  |             |            |           |
| information about the        | to Subpart  |            |           |
| contaminants EPA regulates.  | O           |            |           |
| Those 3 appendices are       |             |            |           |
| deleted and the information  |             |            |           |
| is combined into a new,      |             |            |           |
| comprehensive Appendix A to  |             |            |           |
| Subpart O.                   |             |            |           |
+------------------------------+-------------+------------+-----------+
| The new Appendix A to        |             |            |           |
| Subpart O contains:          |             |            |           |
|                              |             |            |           |
| > -New regulatory and health |             |            |           |
| > effects language from the  |             |            |           |
| > Stage 1 D/DBP rule that    |             |            |           |
| > EPA published in December  |             |            |           |
| > 1998.                      |             |            |           |
| >                            |             |            |           |
| > -Revised health effects    |             |            |           |
| > language for fluoride and  |             |            |           |
| > fecal coliform/*E. coli*   |             |            |           |
| > MCL violations.            |             |            |           |
|                              |             |            |           |
| ***Revised Appendix A to     |             |            |           |
| Subpart O can be found,      |             |            |           |
| after the PN crosswalk.***   |             |            |           |
+------------------------------+-------------+------------+-----------+

  --------------------------------------------------------------------------
  **SUBPART P - ENHANCED                                        
  FILTRATION AND DISINFECTION**                                 
  ------------------------------- ---------------- ------------ ------------
  **§141.175 - Reporting and                                    
  Recordkeeping Requirements**                                  

  If at any time the turbidity    §141.175(c)(1)                
  exceeds 1 NTU in representative                               
  samples of filtered water in a                                
  system using conventional                                     
  filtration treatment or direct                                
  filtration, the system must                                   
  consult with the primacy agency                               
  as soon as practical, but no                                  
  later than 24 hours after the                                 
  exceedance is known, in                                       
  accordance with the public                                    
  notification requirements under                               
  §141.203(b)(3).                                               

  If at any time the turbidity in §141.175(c)(2)                
  representative samples of                                     
  filtered water exceed the                                     
  maximum level set by the State                                
  under §141.173(b) for                                         
  filtration technologies other                                 
  than conventional filtration                                  
  treatment, direct filtration,                                 
  slow sand filtration, or                                      
  diatomaceous earth filtration,                                
  the system must consult with                                  
  the primacy agency as soon as                                 
  practical, but no later than 24                               
  hours after the exceedance is                                 
  known, in accordance with the                                 
  public notification                                           
  requirements under                                            
  §141.203(b)(3).                                               
  --------------------------------------------------------------------------

+------------------------------+-------------+------------+-----------+
| **SUBPART Q - PUBLIC         |             |            |           |
| NOTIFICATION RULE**          |             |            |           |
+==============================+=============+============+===========+
| **§141.201- General Public   |             |            |           |
| Notification Requirements**  |             |            |           |
+------------------------------+-------------+------------+-----------+
| **Who Must Give Public       | **§1        |            |           |
| Notice?**                    | 41.201(a)** |            |           |
|                              |             |            |           |
| Each owner or operator of a  |             |            |           |
| public water system          |             |            |           |
| (community water systems,    |             |            |           |
| non-transient non-community  |             |            |           |
| water systems, and transient |             |            |           |
| non-community water systems) |             |            |           |
| must give notice for all     |             |            |           |
| violations of national       |             |            |           |
| primary drinking water       |             |            |           |
| regulations (NPDWR) and for  |             |            |           |
| other situations, as listed  |             |            |           |
| in Table 1 to §141.201 of    |             |            |           |
| the federal rule.            |             |            |           |
|                              |             |            |           |
| The term NPDWR violations is |             |            |           |
| used in this subpart to      |             |            |           |
| include violations of the    |             |            |           |
| maximum contaminant level    |             |            |           |
| (MCL), maximum residual      |             |            |           |
| disinfection level (MRDL),   |             |            |           |
| treatment technique (TT),    |             |            |           |
| monitoring requirements, and |             |            |           |
| testing procedures in part   |             |            |           |
| 141.                         |             |            |           |
+------------------------------+-------------+------------+-----------+
| (From Table 1 to §141.201 -  |             |            |           |
| Violation Categories and     |             |            |           |
| Other Situations Requiring a |             |            |           |
| Public Notice)               |             |            |           |
|                              |             |            |           |
| (1) NPDWR violations         |             |            |           |
+------------------------------+-------------+------------+-----------+
| > \(i\) Failure to comply    |             |            |           |
| > with an applicable MCL or  |             |            |           |
| > MRDL.                      |             |            |           |
+------------------------------+-------------+------------+-----------+
| > \(ii\) Failure to comply   |             |            |           |
| > with a prescribed TT.      |             |            |           |
+------------------------------+-------------+------------+-----------+
| > \(iii\) Failure to perform |             |            |           |
| > water quality monitoring,  |             |            |           |
| > as required by the         |             |            |           |
| > drinking water             |             |            |           |
| > regulations.               |             |            |           |
+------------------------------+-------------+------------+-----------+
| > \(iv\) Failure to comply   |             |            |           |
| > with testing procedures as |             |            |           |
| > prescribed by a drinking   |             |            |           |
| > water regulation.          |             |            |           |
+------------------------------+-------------+------------+-----------+

+------------------------------+-------------+------------+-----------+
| \(2\) Variances and          |             |            |           |
| exemptions under §§1415 and  |             |            |           |
| 1416 of SDWA.                |             |            |           |
+==============================+=============+============+===========+
| > \(i\) Operation under a    |             |            |           |
| > variance or an exemption.  |             |            |           |
+------------------------------+-------------+------------+-----------+
| > \(ii\) Failure to comply   |             |            |           |
| > with the requirements of   |             |            |           |
| > any schedule that has been |             |            |           |
| > set under a variance or    |             |            |           |
| > exemption.                 |             |            |           |
+------------------------------+-------------+------------+-----------+
| \(3\) Special public notices |             |            |           |
+------------------------------+-------------+------------+-----------+
| > \(i\) Occurrence of a      |             |            |           |
| > waterborne disease         |             |            |           |
| > outbreak or other          |             |            |           |
| > waterborne emergency.      |             |            |           |
| >                            |             |            |           |
| > \(ii\) Exceedance of the   |             |            |           |
| > nitrate MCL by             |             |            |           |
| > non-community water        |             |            |           |
| > systems (NCWSs), where     |             |            |           |
| > granted permission by the  |             |            |           |
| > primacy agency under       |             |            |           |
| > 141.11(d) of this part.    |             |            |           |
| >                            |             |            |           |
| > \(iii\) Exceedance of the  |             |            |           |
| > secondary maximum          |             |            |           |
| > contaminant level (SMCL)   |             |            |           |
| > for fluoride.              |             |            |           |
| >                            |             |            |           |
| > \(iv\) Availability of     |             |            |           |
| > unregulated contaminant    |             |            |           |
| > monitoring data.           |             |            |           |
| >                            |             |            |           |
| > \(v\) Other violations and |             |            |           |
| > situations determined by   |             |            |           |
| > the primacy agency to      |             |            |           |
| > require a public notice    |             |            |           |
| > under this subpart, not    |             |            |           |
| > already listed in Appendix |             |            |           |
| > A.                         |             |            |           |
+------------------------------+-------------+------------+-----------+
| **What Type of Public Notice | **§1        |            |           |
| Is Required for Each         | 41.201(b)** |            |           |
| Violation or Situation?**    |             |            |           |
|                              |             |            |           |
| Public notice requirements   |             |            |           |
| are divided into three tiers |             |            |           |
| to take into account the     |             |            |           |
| seriousness of the violation |             |            |           |
| or situation and of any      |             |            |           |
| potential adverse health     |             |            |           |
| effects that may be          |             |            |           |
| involved. The public notice  |             |            |           |
| requirements for each        |             |            |           |
| violation or situation       |             |            |           |
| listed in Table 1 of this    |             |            |           |
| section are determined by    |             |            |           |
| the Tier to which it is      |             |            |           |
| assigned. Table 2 of this    |             |            |           |
| section provides the         |             |            |           |
| definition of each Tier.     |             |            |           |
| Appendix A of this part      |             |            |           |
| identifies the tier          |             |            |           |
| assignment for each specific |             |            |           |
| violation or situation.      |             |            |           |
|                              |             |            |           |
| (From Table 2 to §141.201 -  |             |            |           |
| Definition of Public Notice  |             |            |           |
| Tiers )                      |             |            |           |
+------------------------------+-------------+------------+-----------+
| (1) Tier 1 public notice -   |             |            |           |
|     required for NPDWR       |             |            |           |
|     violations and           |             |            |           |
|     situations with          |             |            |           |
|     significant potential to |             |            |           |
|     have serious adverse     |             |            |           |
|     effects on human health  |             |            |           |
|     as a result of           |             |            |           |
|     short-term exposure.     |             |            |           |
+------------------------------+-------------+------------+-----------+
| (2) Tier 2 public notice -   |             |            |           |
|     required for all other   |             |            |           |
|     NPDWR violations and     |             |            |           |
|     situations with          |             |            |           |
|     potential to have        |             |            |           |
|     serious adverse effects  |             |            |           |
|     on human health.         |             |            |           |
|                              |             |            |           |
| (3) Tier 3 public notice -   |             |            |           |
|     required for all other   |             |            |           |
|     NPDWR violations and     |             |            |           |
|     situations not included  |             |            |           |
|     in Tier 1 and Tier 2.    |             |            |           |
+------------------------------+-------------+------------+-----------+
| **Who Must Be Notified?**    | **§1        |            |           |
|                              | 41.201(c)** |            |           |
| (1) Each PWS must provide    |             |            |           |
|     public notice to persons | §14         |            |           |
|     served by the water      | 1.201(c)(1) |            |           |
|     system, in accordance    |             |            |           |
|     with this subpart.       | §14         |            |           |
|                              | 1.201(c)(2) |            |           |
| > PWSs that sell or          |             |            |           |
| > otherwise provide drinking | §14         |            |           |
| > water to other PWSs (i.e., | 1.201(c)(3) |            |           |
| > to consecutive systems)    |             |            |           |
| > are required to give       |             |            |           |
| > public notice to the owner |             |            |           |
| > or operator of the         |             |            |           |
| > consecutive system. The    |             |            |           |
| > consecutive system is      |             |            |           |
| > responsible for providing  |             |            |           |
| > public notice to the       |             |            |           |
| > persons it serves.         |             |            |           |
|                              |             |            |           |
| (2) If a PWS has a violation |             |            |           |
|     in a portion of the      |             |            |           |
|     distribution system that |             |            |           |
|     is physically or         |             |            |           |
|     hydraulically isolated   |             |            |           |
|     from other parts of the  |             |            |           |
|     distribution system, the |             |            |           |
|     primacy agency may allow |             |            |           |
|     the system to limit      |             |            |           |
|     distribution of the      |             |            |           |
|     public notice to only    |             |            |           |
|     persons served by that   |             |            |           |
|     portion of the system    |             |            |           |
|     which is out of          |             |            |           |
|     compliance. Permission   |             |            |           |
|     by the primacy agency    |             |            |           |
|     for limiting             |             |            |           |
|     distribution must be     |             |            |           |
|     granted in writing.      |             |            |           |
|                              |             |            |           |
| (3) A copy of the notice     |             |            |           |
|     must also be sent to the |             |            |           |
|     primacy agency, in       |             |            |           |
|     accordance with the      |             |            |           |
|     requirements under       |             |            |           |
|     §141.31(d).              |             |            |           |
+------------------------------+-------------+------------+-----------+
| **§141.202 - Tier 1 Public   |             |            |           |
| Notice Requirements - Form,  |             |            |           |
| Manner, and Frequency of     |             |            |           |
| Notice**                     |             |            |           |
+------------------------------+-------------+------------+-----------+
| **Which Violations or        | **§1        |            |           |
| Situations Require a Tier 1  | 41.202(a)** |            |           |
| Public Notice?**             |             |            |           |
|                              |             |            |           |
| Table 1 of this section      |             |            |           |
| lists the violation          |             |            |           |
| categories and other         |             |            |           |
| situations requiring a Tier  |             |            |           |
| 1 public notice. Appendix A  |             |            |           |
| to this subpart identifies   |             |            |           |
| the Tier assignment for each |             |            |           |
| specific violation or        |             |            |           |
| situation.                   |             |            |           |
|                              |             |            |           |
| (From Table 1 to §141.202 -  |             |            |           |
| Violation Categories and     |             |            |           |
| Other Situations Requiring a |             |            |           |
| Tier 1 Public Notice)        |             |            |           |
|                              |             |            |           |
| (1) Violations of the MCL    |             |            |           |
|     for total coliforms when |             |            |           |
|     fecal coliform or *E.    |             |            |           |
|     coli* are present in the |             |            |           |
|     water distribution       |             |            |           |
|     system (as specified in  |             |            |           |
|     §141.63(b)), or when the |             |            |           |
|     water system fails to    |             |            |           |
|     test for fecal coliforms |             |            |           |
|     or *E. coli* when any    |             |            |           |
|     repeat sample tests      |             |            |           |
|     positive for coliform    |             |            |           |
|     (as specified in         |             |            |           |
|     §141.21(e));             |             |            |           |
+------------------------------+-------------+------------+-----------+
| \(2\) Violation of the MCL   |             |            |           |
| for nitrate, nitrite, or     |             |            |           |
| total nitrate and nitrite,   |             |            |           |
| as defined in §141.62, or    |             |            |           |
| when the water system fails  |             |            |           |
| to take a confirmation       |             |            |           |
| sample within 24 hours of    |             |            |           |
| the system's receipt of the  |             |            |           |
| first sample showing an      |             |            |           |
| exceedance of the nitrate or |             |            |           |
| nitrite MCL, as specified in |             |            |           |
| §141.23(f)(2);               |             |            |           |
+------------------------------+-------------+------------+-----------+
| \(3\) Exceedance of the      |             |            |           |
| nitrate MCL by non-community |             |            |           |
| water systems, where         |             |            |           |
| permitted to exceed the MCL  |             |            |           |
| by the primacy agency under  |             |            |           |
| §141.11(d), as required      |             |            |           |
| under §141.209;              |             |            |           |
+------------------------------+-------------+------------+-----------+
| \(4\) Violation of the MRDL  |             |            |           |
| for chlorine dioxide, as     |             |            |           |
| defined in §141.65(a), when  |             |            |           |
| one or more samples taken in |             |            |           |
| the distribution system the  |             |            |           |
| day following an exceedance  |             |            |           |
| of the MRDL at the entrance  |             |            |           |
| of the distribution system   |             |            |           |
| exceed the MRDL, or when the |             |            |           |
| water system does not take   |             |            |           |
| the required samples in the  |             |            |           |
| distribution system, as      |             |            |           |
| specified in                 |             |            |           |
| §141.133(c)(2)(i);           |             |            |           |
+------------------------------+-------------+------------+-----------+
| \(5\) Violation of the       |             |            |           |
| turbidity MCL under          |             |            |           |
| §141.13(b), where the        |             |            |           |
| primacy agency determines    |             |            |           |
| after consultation that a    |             |            |           |
| Tier 1 notice is required or |             |            |           |
| where consultation does not  |             |            |           |
| take place within 24 hours   |             |            |           |
| after the system learns of   |             |            |           |
| the violation;               |             |            |           |
+------------------------------+-------------+------------+-----------+

  ------------------------------------------------------------------------
  \(6\) Violation of the Surface                              
  Water Treatment Rule (SWTR) or                              
  Interim Enhanced Surface Water                              
  Treatment Rule (IESWTR)                                     
  treatment technique requirement                             
  resulting from a single                                     
  exceedance of the maximum                                   
  allowable turbidity limit (as                               
  identified in Appendix A),                                  
  where the primacy agency                                    
  determines after consultation                               
  that a Tier 1 notice is                                     
  required or where consultation                              
  does not take place within 24                               
  hours after the system learns                               
  of the violation;                                           
  ------------------------------- -------------- ------------ ------------
  \(7\) Occurrence of a                                       
  waterborne disease outbreak, as                             
  defined in §141.2, or other                                 
  waterborne emergency (such as a                             
  failure or significant                                      
  interruption in key water                                   
  treatment processes, a natural                              
  disaster that disrupts the                                  
  water supply or distribution                                
  system, or a chemical spill or                              
  unexpected loading of possible                              
  pathogens into the source water                             
  that significantly increases                                
  the potential for drinking                                  
  water contamination);                                       

  \(8\) Other violations or                                   
  situations with significant                                 
  potential to have serious                                   
  adverse effects on human health                             
  as a result of short-term                                   
  exposure, as determined by the                              
  primacy agency either in its                                
  regulations or on a                                         
  case-by-case basis.                                         
  ------------------------------------------------------------------------

+------------------------------+-------------+------------+-----------+
| **When is the Tier 1 Public  | **§1        |            |           |
| Notice to be Provided? What  | 41.202(b)** |            |           |
| Additional Steps Are         |             |            |           |
| Required?**                  |             |            |           |
+==============================+=============+============+===========+
| PWSs must:                   | §14         |            |           |
|                              | 1.202(b)(1) |            |           |
| (1) Provide public notice as |             |            |           |
|     soon as practical but no | §14         |            |           |
|     later than 24 hours      | 1.202(b)(2) |            |           |
|     after the system learns  |             |            |           |
|     of the violation;        |             |            |           |
|                              |             |            |           |
| (2) Initiate consultation    |             |            |           |
|     with the primacy agency  |             |            |           |
|     as soon as practical,    |             |            |           |
|     but no later than 24     |             |            |           |
|     hours after the PWS      |             |            |           |
|     learns of the violation  |             |            |           |
|     or situation, to         |             |            |           |
|     determine additional     |             |            |           |
|     public notice            |             |            |           |
|     requirements; and        |             |            |           |
+------------------------------+-------------+------------+-----------+
| (3) Comply with any          | §14         |            |           |
|     additional public        | 1.202(b)(3) |            |           |
|     notification             |             |            |           |
|     requirements (including  |             |            |           |
|     any repeat notices or    |             |            |           |
|     direction on the         |             |            |           |
|     duration of posted       |             |            |           |
|     notices) that are        |             |            |           |
|     established as a result  |             |            |           |
|     of the consultation with |             |            |           |
|     the primacy agency. Such |             |            |           |
|     requirements may include |             |            |           |
|     the timing, form,        |             |            |           |
|     manner, frequency, and   |             |            |           |
|     content of repeat        |             |            |           |
|     notices (if any) and     |             |            |           |
|     other actions designed   |             |            |           |
|     to reach all persons     |             |            |           |
|     served.                  |             |            |           |
+------------------------------+-------------+------------+-----------+
| **What is the Form and       | **§1        |            |           |
| Manner of the Public         | 41.202(c)** |            |           |
| Notice?**                    |             |            |           |
+------------------------------+-------------+------------+-----------+
| PWSs must provide the notice |             |            |           |
| within 24 hours in a form    |             |            |           |
| and manner reasonably        |             |            |           |
| calculated to reach all      |             |            |           |
| persons served. The form and |             |            |           |
| manner used by the PWS are   |             |            |           |
| to fit the specific          |             |            |           |
| situation, but must be       |             |            |           |
| designed to reach            |             |            |           |
| residential, transient, and  |             |            |           |
| non-transient users of the   |             |            |           |
| water system.                |             |            |           |
+------------------------------+-------------+------------+-----------+

+------------------------------+-------------+------------+-----------+
| In order to reach all        |             |            |           |
| persons served, water        |             |            |           |
| systems are to use, at a     |             |            |           |
| minimum, one or more of the  |             |            |           |
| following forms of delivery: |             |            |           |
+==============================+=============+============+===========+
| (1) Appropriate broadcast    | §14         |            |           |
|     media (such as radio and | 1.202(c)(1) |            |           |
|     television);             |             |            |           |
+------------------------------+-------------+------------+-----------+
| (2) Posting of the notice in | §14         |            |           |
|     conspicuous locations    | 1.202(c)(2) |            |           |
|     throughout the area      |             |            |           |
|     served by the water      |             |            |           |
|     system;                  |             |            |           |
+------------------------------+-------------+------------+-----------+
| \(3\) Hand delivery of the   | §14         |            |           |
| notice to persons served by  | 1.202(c)(3) |            |           |
| the water system; or         |             |            |           |
+------------------------------+-------------+------------+-----------+
| \(4\) Another delivery       | §14         |            |           |
| method approved in writing   | 1.202(c)(4) |            |           |
| by the primacy agency.       |             |            |           |
+------------------------------+-------------+------------+-----------+
| **§141.203 - Tier 2 Public   |             |            |           |
| Notice Requirements - Form,  |             |            |           |
| Manner, and Frequency of     |             |            |           |
| Notice**                     |             |            |           |
+------------------------------+-------------+------------+-----------+
| **Which Violations or        | **§1        |            |           |
| Situations Require a Tier 2  | 41.203(a)** |            |           |
| Public Notice?**             |             |            |           |
|                              |             |            |           |
| Table 1 of this section      |             |            |           |
| lists the violation          |             |            |           |
| categories and other         |             |            |           |
| situations requiring a Tier  |             |            |           |
| 2 public notice. Appendix A  |             |            |           |
| to this subpart identifies   |             |            |           |
| the tier assignment for each |             |            |           |
| specific violation or        |             |            |           |
| situation.                   |             |            |           |
|                              |             |            |           |
| (From Table 1 to §141.203 -  |             |            |           |
| Violation Categories and     |             |            |           |
| Other Situations Requiring a |             |            |           |
| Tier 2 Public Notice)        |             |            |           |
+------------------------------+-------------+------------+-----------+
| (1) All violations of the    |             |            |           |
|     MCL, MRDL, and treatment |             |            |           |
|     technique requirements,  |             |            |           |
|     except where a Tier 1    |             |            |           |
|     notice is required under |             |            |           |
|     §141.202(a) or where the |             |            |           |
|     primacy agency           |             |            |           |
|     determines that a Tier 1 |             |            |           |
|     notice is required;      |             |            |           |
+------------------------------+-------------+------------+-----------+
| (2) Violations of the        |             |            |           |
|     monitoring and testing   |             |            |           |
|     procedure requirements,  |             |            |           |
|     where the primacy agency |             |            |           |
|     determines that a Tier 2 |             |            |           |
|     rather than a Tier 3     |             |            |           |
|     public notice is         |             |            |           |
|     required, taking into    |             |            |           |
|     account potential health |             |            |           |
|     impacts and persistence  |             |            |           |
|     of the violation; and    |             |            |           |
+------------------------------+-------------+------------+-----------+
| (3) Failure to comply with   |             |            |           |
|     the terms and conditions |             |            |           |
|     of any variance or       |             |            |           |
|     exemption in place.      |             |            |           |
+------------------------------+-------------+------------+-----------+
| **When is the Tier 2 Public  | **§1        |            |           |
| Notice to be Provided?**     | 41.203(b)** |            |           |
+------------------------------+-------------+------------+-----------+
| (1) PWSs must provide public | §14         |            |           |
|     notice as soon as        | 1.203(b)(1) |            |           |
|     practical, but no later  |             |            |           |
|     than 30 days after the   |             |            |           |
|     system learns of the     |             |            |           |
|     violation.               |             |            |           |
|                              |             |            |           |
| > If the public notice is    |             |            |           |
| > posted, the notice must    |             |            |           |
| > remain in place for as     |             |            |           |
| > long as the violation or   |             |            |           |
| > situation persists, but in |             |            |           |
| > no case for less than      |             |            |           |
| > seven days, even if the    |             |            |           |
| > violation or situation is  |             |            |           |
| > resolved. The primacy      |             |            |           |
| > agency may, in appropriate |             |            |           |
| > circumstances, allow       |             |            |           |
| > additional time for the    |             |            |           |
| > initial notice of up to    |             |            |           |
| > three months from the date |             |            |           |
| > the system learns of the   |             |            |           |
| > violation. Extensions      |             |            |           |
| > granted by the primacy     |             |            |           |
| > agency must be in writing. |             |            |           |
+------------------------------+-------------+------------+-----------+
| (2) The PWS must repeat the  | §14         |            |           |
|     notice every three       | 1.203(b)(2) |            |           |
|     months, as long as the   |             |            |           |
|     violation or situation   |             |            |           |
|     persists, unless the     |             |            |           |
|     primacy agency           |             |            |           |
|     determines that          |             |            |           |
|     appropriate              |             |            |           |
|     circumstances warrant a  |             |            |           |
|     different repeat notice  |             |            |           |
|     frequency.               |             |            |           |
+------------------------------+-------------+------------+-----------+
| > In no circumstance may the |             |            |           |
| > repeat notice be given     |             |            |           |
| > less frequently than once  |             |            |           |
| > per year. Primacy agency   |             |            |           |
| > determinations allowing    |             |            |           |
| > repeat notices to be given |             |            |           |
| > less frequently than once  |             |            |           |
| > every three months must be |             |            |           |
| > in writing.                |             |            |           |
+------------------------------+-------------+------------+-----------+

+------------------------------+-------------+------------+-----------+
| (3) For the turbidity        | §14         |            |           |
|     violations specified in  | 1.203(b)(3) |            |           |
|     this paragraph, PWSs     |             |            |           |
|     must consult with the    |             |            |           |
|     primacy agency as soon   |             |            |           |
|     as practical but no      |             |            |           |
|     later than 24 hours      |             |            |           |
|     after the PWS learns of  |             |            |           |
|     the violation, to        |             |            |           |
|     determine whether a Tier |             |            |           |
|     1 public notice under    |             |            |           |
|     §141.202(a) is required  |             |            |           |
|     to protect public        |             |            |           |
|     health.                  |             |            |           |
|                              |             |            |           |
| > When consultation does not |             |            |           |
| > take place within the      |             |            |           |
| > 24-hour period, the water  |             |            |           |
| > system must distribute a   |             |            |           |
| > Tier 1 notice of the       |             |            |           |
| > violation within the next  |             |            |           |
| > 24 hours (i.e., no later   |             |            |           |
| > than 48 hours after the    |             |            |           |
| > system learns of the       |             |            |           |
| > violation), following the  |             |            |           |
| > requirements under         |             |            |           |
| > §141.202(b) and (c).       |             |            |           |
+==============================+=============+============+===========+
| > Consultation with the      |             |            |           |
| > primacy agency is required |             |            |           |
| > for:                       |             |            |           |
|                              |             |            |           |
| i.  Violation of the         |             |            |           |
|     turbidity MCL under      |             |            |           |
|     §141.13(b); or           |             |            |           |
|                              |             |            |           |
| ```{=html}                   |             |            |           |
| <!-- -->                     |             |            |           |
| ```                          |             |            |           |
| 2.  ) Violation of the SWTR  |             |            |           |
|     or IESWTR treatment      |             |            |           |
|     technique requirement    |             |            |           |
|     resulting from a single  |             |            |           |
|     exceedance of the        |             |            |           |
|     maximum allowable        |             |            |           |
|     turbidity limit.         |             |            |           |
+------------------------------+-------------+------------+-----------+

+------------------------------+-------------+------------+-----------+
| **What is the Form and       | **§1        |            |           |
| Manner of the Tier 2 Public  | 41.203(c)** |            |           |
| Notice?**                    |             |            |           |
+==============================+=============+============+===========+
| PWSs must provide the        |             |            |           |
| initial public notice and    |             |            |           |
| any repeat notices in a form |             |            |           |
| and manner that is           |             |            |           |
| reasonably calculated to     |             |            |           |
| reach persons served in the  |             |            |           |
| required time period. The    |             |            |           |
| form and manner of the       |             |            |           |
| public notice may vary based |             |            |           |
| on the specific situation    |             |            |           |
| and type of water system,    |             |            |           |
| but it must at a minimum     |             |            |           |
| meet the following           |             |            |           |
| requirements:                |             |            |           |
+------------------------------+-------------+------------+-----------+
| \(1\) Unless directed        | §14         |            |           |
| otherwise by the primacy     | 1.203(c)(1) |            |           |
| agency in writing, a CWS     |             |            |           |
| must provide notice by:      |             |            |           |
+------------------------------+-------------+------------+-----------+
| > \(i\) Mail or other direct | §141.2      |            |           |
| > delivery to each customer  | 03(c)(1)(i) |            |           |
| > receiving a bill and to    |             |            |           |
| > other service connections  |             |            |           |
| > to which water is          |             |            |           |
| > delivered by the PWS; and  |             |            |           |
+------------------------------+-------------+------------+-----------+
| > \(ii\) Any other method    | §141.20     |            |           |
| > reasonably calculated to   | 3(c)(1)(ii) |            |           |
| > reach other persons        |             |            |           |
| > regularly served by the    |             |            |           |
| > system, if they would not  |             |            |           |
| > normally be reached by the |             |            |           |
| > notice required in         |             |            |           |
| > paragraph (c)(1)(i) of     |             |            |           |
| > this section.              |             |            |           |
| >                            |             |            |           |
| > Such persons may include   |             |            |           |
| > those who do not pay water |             |            |           |
| > bills or do not have       |             |            |           |
| > service connection         |             |            |           |
| > addresses (e.g. house      |             |            |           |
| > renters, apartment         |             |            |           |
| > dwellers, university       |             |            |           |
| > students, nursing home     |             |            |           |
| > patients, prison inmates,  |             |            |           |
| > etc.)                      |             |            |           |
+------------------------------+-------------+------------+-----------+
| > Other methods may include: |             |            |           |
| > publication in a local     |             |            |           |
| > newspaper; delivery of     |             |            |           |
| > multiple copies for        |             |            |           |
| > distribution by customers  |             |            |           |
| > that provide drinking      |             |            |           |
| > water to others (e.g.      |             |            |           |
| > apartment building owners  |             |            |           |
| > or large private           |             |            |           |
| > employers); posting in     |             |            |           |
| > public places served by    |             |            |           |
| > the system or on the       |             |            |           |
| > Internet; or delivery to   |             |            |           |
| > community organizations.   |             |            |           |
+------------------------------+-------------+------------+-----------+
| \(2\) Unless otherwise       | §14         |            |           |
| directed by the primacy      | 1.203(c)(2) |            |           |
| agency in writing, a NCWS    |             |            |           |
| must provide notice by:      |             |            |           |
+------------------------------+-------------+------------+-----------+
| > \(i\) Posting the notice   | §141.2      |            |           |
| > in conspicuous locations   | 03(c)(2)(i) |            |           |
| > throughout the             |             |            |           |
| > distribution system        |             |            |           |
| > frequented by persons      |             |            |           |
| > served by the system, or   |             |            |           |
| > by mail or direct delivery |             |            |           |
| > to each customer and       |             |            |           |
| > service connection (where  |             |            |           |
| > known); and                |             |            |           |
+------------------------------+-------------+------------+-----------+
| > \(ii\) Any other method    | §141.20     |            |           |
| > reasonably calculated to   | 3(c)(2)(ii) |            |           |
| > reach other persons served |             |            |           |
| > by the system if they      |             |            |           |
| > would not normally be      |             |            |           |
| > reached by the notice      |             |            |           |
| > required in paragraph      |             |            |           |
| > (c)(2)(i) of this section. |             |            |           |
| >                            |             |            |           |
| > Such persons may include   |             |            |           |
| > those served who may not   |             |            |           |
| > see a posted notice        |             |            |           |
| > because the posted notice  |             |            |           |
| > is not in a location they  |             |            |           |
| > routinely pass by. Other   |             |            |           |
| > methods may include:       |             |            |           |
| > publication in a local     |             |            |           |
| > newspaper or newsletter    |             |            |           |
| > distributed to customers;  |             |            |           |
| > use of E-mail to notify    |             |            |           |
| > employees or students; or  |             |            |           |
| > delivery of multiple       |             |            |           |
| > copies in central          |             |            |           |
| > locations (e.g., community |             |            |           |
| > centers).                  |             |            |           |
+------------------------------+-------------+------------+-----------+

+------------------------------+-------------+------------+-----------+
| **§141.204 - Tier 3 Public   |             |            |           |
| Notice Requirements - Form,  |             |            |           |
| Manner, and Frequency of     |             |            |           |
| Notice**                     |             |            |           |
+==============================+=============+============+===========+
| **Which Violations or        | **§1        |            |           |
| Situations Require a Tier 3  | 41.204(a)** |            |           |
| Public Notice?**             |             |            |           |
+------------------------------+-------------+------------+-----------+
| Table 1 of this section list |             |            |           |
| the violation categories and |             |            |           |
| other situations requiring a |             |            |           |
| Tier 3 public notice.        |             |            |           |
| Appendix A to this subpart   |             |            |           |
| identifies the tier          |             |            |           |
| assignment for each specific |             |            |           |
| violation or situation.      |             |            |           |
|                              |             |            |           |
| (From Table 1 to §141.204 -  |             |            |           |
| Violation Categories and     |             |            |           |
| Other Situations Requiring a |             |            |           |
| Tier 3 Public Notice)        |             |            |           |
|                              |             |            |           |
| \(1\) Monitoring violations  |             |            |           |
| under 40 CFR part 141,       |             |            |           |
| except where a Tier 1 notice |             |            |           |
| is required under            |             |            |           |
| §141.202(a) or where the     |             |            |           |
| primacy agency determines    |             |            |           |
| that a Tier 2 notice is      |             |            |           |
| required;                    |             |            |           |
+------------------------------+-------------+------------+-----------+
| (4) Failure to comply with a |             |            |           |
|     testing procedure        |             |            |           |
|     established in 40 CFR    |             |            |           |
|     part 141, except where   |             |            |           |
|     Tier 1 notice is         |             |            |           |
|     required under           |             |            |           |
|     §141.202(a) or where the |             |            |           |
|     primacy agency           |             |            |           |
|     determines that a Tier 2 |             |            |           |
|     notice is required;      |             |            |           |
+------------------------------+-------------+------------+-----------+
| (4) Operation under a        |             |            |           |
|     variance granted under   |             |            |           |
|     section 1415 or          |             |            |           |
|     exemption granted under  |             |            |           |
|     section 1416 of the Safe |             |            |           |
|     Drinking Water Act;      |             |            |           |
+------------------------------+-------------+------------+-----------+
| (5) Availability of          |             |            |           |
|     unregulated contaminant  |             |            |           |
|     monitoring results, as   |             |            |           |
|     required under §141.207; |             |            |           |
|     and                      |             |            |           |
+------------------------------+-------------+------------+-----------+
| (6) Exceedance of the        |             |            |           |
|     fluoride SMCL, as        |             |            |           |
|     required under §141.208. |             |            |           |
+------------------------------+-------------+------------+-----------+

+------------------------------+-------------+------------+-----------+
| **When is the Tier 3 Public  | **§1        |            |           |
| Notice to be Provided?**     | 41.204(b)** |            |           |
+==============================+=============+============+===========+
| (1) PWSs must provide the    | §14         |            |           |
|     public notice not later  | 1.204(b)(1) |            |           |
|     than one year after the  |             |            |           |
|     PWS learns of the        |             |            |           |
|     violation or situation   |             |            |           |
|     or begins operating      |             |            |           |
|     under a variance or      |             |            |           |
|     exemption.               |             |            |           |
|                              |             |            |           |
| > Following the initial      |             |            |           |
| > notice the PWS must repeat |             |            |           |
| > the notice annually for as |             |            |           |
| > long as the violation,     |             |            |           |
| > variance, exemption, or    |             |            |           |
| > other situation persists.  |             |            |           |
| >                            |             |            |           |
| > If the public notice is    |             |            |           |
| > posted, the notice must    |             |            |           |
| > remain in place for as     |             |            |           |
| > long as the violation,     |             |            |           |
| > variance, exemption, or    |             |            |           |
| > other situation persists,  |             |            |           |
| > but in no case less than   |             |            |           |
| > seven days (even if the    |             |            |           |
| > violation or situation is  |             |            |           |
| > resolved).                 |             |            |           |
+------------------------------+-------------+------------+-----------+
| (2) Instead of individual    | §14         |            |           |
|     Tier 3 public notices, a | 1.204(b)(2) |            |           |
|     PWS may use an annual    |             |            |           |
|     report detailing all     |             |            |           |
|     violations and           |             |            |           |
|     situations that occurred |             |            |           |
|     during the previous      |             |            |           |
|     twelve months, as long   |             |            |           |
|     as the timing            |             |            |           |
|     requirements of          |             |            |           |
|     paragraph (b)(1) of this |             |            |           |
|     section are met.         |             |            |           |
+------------------------------+-------------+------------+-----------+
| **What is the Form and       | **§1        |            |           |
| Manner of the Tier 3 Public  | 41.204(c)** |            |           |
| Notice?**                    |             |            |           |
+------------------------------+-------------+------------+-----------+
| PWSs must provide the        |             |            |           |
| initial notice and any       |             |            |           |
| repeat notices in a form and |             |            |           |
| manner that is reasonably    |             |            |           |
| calculated to reach persons  |             |            |           |
| served in the required time  |             |            |           |
| period. The form and manner  |             |            |           |
| of the public notice may     |             |            |           |
| vary based on the specific   |             |            |           |
| situation and type of water  |             |            |           |
| system, but it must at a     |             |            |           |
| minimum meet the following   |             |            |           |
| requirements:                |             |            |           |
+------------------------------+-------------+------------+-----------+
| (1) Unless directed          | §14         |            |           |
|     otherwise by the primacy | 1.204(c)(1) |            |           |
|     agency in writing,       |             |            |           |
|     community water systems  |             |            |           |
|     must provide notice by:  |             |            |           |
+------------------------------+-------------+------------+-----------+
| > \(i\) Mail or other direct | §141.2      |            |           |
| > delivery to each customer  | 04(c)(1)(i) |            |           |
| > receiving a bill and to    |             |            |           |
| > other service connections  |             |            |           |
| > to which water is          |             |            |           |
| > delivered by the PWS; and  |             |            |           |
+------------------------------+-------------+------------+-----------+
| > \(ii\) Any other method    | §141.20     |            |           |
| > reasonably calculated to   | 4(c)(1)(ii) |            |           |
| > reach other persons        |             |            |           |
| > regularly served by the    |             |            |           |
| > system, if they would not  |             |            |           |
| > normally be reached by the |             |            |           |
| > notice required in         |             |            |           |
| > paragraph (c)(1)(i) of     |             |            |           |
| > this section.              |             |            |           |
| >                            |             |            |           |
| > Such persons may include   |             |            |           |
| > those who do not pay water |             |            |           |
| > bills or do not have       |             |            |           |
| > service connection         |             |            |           |
| > addresses (e.g., house     |             |            |           |
| > renters, apartment         |             |            |           |
| > dwellers, university       |             |            |           |
| > students, nursing home     |             |            |           |
| > patients, prison inmates,  |             |            |           |
| > etc..).                    |             |            |           |
| >                            |             |            |           |
| > Other methods may include: |             |            |           |
| > publication in a local     |             |            |           |
| > newspaper; delivery of     |             |            |           |
| > multiple copies for        |             |            |           |
| > distribution by customers  |             |            |           |
| > that provide their         |             |            |           |
| > drinking water to others   |             |            |           |
| > (e.g., apartment building  |             |            |           |
| > owners or large private    |             |            |           |
| > employers); posting in     |             |            |           |
| > public places or on the    |             |            |           |
| > Internet; or delivery to   |             |            |           |
| > community organizations.   |             |            |           |
+------------------------------+-------------+------------+-----------+

+------------------------------+-------------+------------+-----------+
| \(2\) Unless otherwise       | §14         |            |           |
| directed by the primacy      | 1.204(c)(2) |            |           |
| agency in writing, a NCWS    |             |            |           |
| must provide notice by:      |             |            |           |
+==============================+=============+============+===========+
| > \(i\) Posting the notice   | §141.2      |            |           |
| > in conspicuous locations   | 04(c)(2)(i) |            |           |
| > throughout the             |             |            |           |
| > distribution system        |             |            |           |
| > frequented by persons      |             |            |           |
| > served by the system, or   |             |            |           |
| > by mail or direct delivery |             |            |           |
| > to each customer and       |             |            |           |
| > service connection (where  |             |            |           |
| > known); and                |             |            |           |
+------------------------------+-------------+------------+-----------+
| > \(ii\) Any other method    | §141.20     |            |           |
| > reasonably calculated to   | 4(c)(2)(ii) |            |           |
| > reach other persons served |             |            |           |
| > by the system, if they     |             |            |           |
| > would not normally be      |             |            |           |
| > reached by the notice      |             |            |           |
| > required in paragraph      |             |            |           |
| > (c)(2)(i) of this section. |             |            |           |
+------------------------------+-------------+------------+-----------+
| > Such persons may include   |             |            |           |
| > those who may not see a    |             |            |           |
| > posted notice because the  |             |            |           |
| > notice is not in a         |             |            |           |
| > location they routinely    |             |            |           |
| > pass by.                   |             |            |           |
| >                            |             |            |           |
| > Other methods may include: |             |            |           |
| > publication in a local     |             |            |           |
| > newspaper or newsletter    |             |            |           |
| > distributed to customers;  |             |            |           |
| > use of E-mail to notify    |             |            |           |
| > employees or students; or, |             |            |           |
| > delivery of multiple       |             |            |           |
| > copies in central          |             |            |           |
| > locations (e.g., community |             |            |           |
| > centers).                  |             |            |           |
+------------------------------+-------------+------------+-----------+

+------------------------------+-------------+------------+-----------+
| **In What Situations May the | **§1        |            |           |
| Consumer Confidence Report   | 41.204(d)** |            |           |
| (CCR) Be Used to Meet the    |             |            |           |
| Tier 3 Public Notice         |             |            |           |
| Requirements?**              |             |            |           |
+==============================+=============+============+===========+
| For community water systems, | §14         |            |           |
| the CCR required under       | 1.204(d)(1) |            |           |
| subpart O of this part may   |             |            |           |
| be used as a vehicle for the | §14         |            |           |
| initial Tier 3 public notice | 1.204(d)(2) |            |           |
| and all required repeat      |             |            |           |
| notices, as long as:         | §14         |            |           |
|                              | 1.204(d)(3) |            |           |
| 1.  The CCR is provided to   |             |            |           |
|     persons served no later  |             |            |           |
|     than 12 months after the |             |            |           |
|     system learns of the     |             |            |           |
|     violation or situation   |             |            |           |
|     as required under        |             |            |           |
|     §141.204(b);             |             |            |           |
|                              |             |            |           |
| 2.  The Tier 3 notice        |             |            |           |
|     contained in the CCR     |             |            |           |
|     follows the content      |             |            |           |
|     requirements under       |             |            |           |
|     §141.205; and            |             |            |           |
|                              |             |            |           |
| 3.  The CCR is distributed   |             |            |           |
|     following the delivery   |             |            |           |
|     requirements under       |             |            |           |
|     §141.204(c).             |             |            |           |
+------------------------------+-------------+------------+-----------+

+------------------------------+-------------+------------+-----------+
| **§141.205 - Content of the  |             |            |           |
| Public Notice**              |             |            |           |
+==============================+=============+============+===========+
| **What Elements Must Be      | **§1        |            |           |
| Included in the Public       | 41.205(a)** |            |           |
| Notice for Violations of     |             |            |           |
| NPDWR or Other Situations    |             |            |           |
| Requiring a Public Notice?** |             |            |           |
+------------------------------+-------------+------------+-----------+
| When a PWS violates a NPDWR  |             |            |           |
| or has a situation requiring |             |            |           |
| public notification, each    |             |            |           |
| public notice must include   |             |            |           |
| the following elements:      |             |            |           |
+------------------------------+-------------+------------+-----------+
| (1) A description of the     | §14         |            |           |
|     violation or situation,  | 1.205(a)(1) |            |           |
|     including the            |             |            |           |
|     contaminant(s) of        |             |            |           |
|     concern, and (as         |             |            |           |
|     applicable) the          |             |            |           |
|     contaminant level(s);    |             |            |           |
+------------------------------+-------------+------------+-----------+
| (2) When the violation or    | §14         |            |           |
|     situation occurred;      | 1.205(a)(2) |            |           |
+------------------------------+-------------+------------+-----------+
| (3) Any potential adverse    | §14         |            |           |
|     health effects from the  | 1.205(a)(3) |            |           |
|     violation or situation,  |             |            |           |
|     including the standard   |             |            |           |
|     language under paragraph |             |            |           |
|     (d)(1) or (d)(2) of this |             |            |           |
|     section, whichever is    |             |            |           |
|     applicable;              |             |            |           |
+------------------------------+-------------+------------+-----------+
| (4) The population at risk,  | §14         |            |           |
|     including subpopulations | 1.205(a)(4) |            |           |
|     particularly vulnerable  |             |            |           |
|     if exposed to the        |             |            |           |
|     contaminant in their     |             |            |           |
|     drinking water;          |             |            |           |
+------------------------------+-------------+------------+-----------+
| (5) Whether alternative      | §14         |            |           |
|     water supplies should be | 1.205(a)(5) |            |           |
|     used;                    |             |            |           |
+------------------------------+-------------+------------+-----------+
| (6) What actions consumers   | §14         |            |           |
|     should take, including   | 1.205(a)(6) |            |           |
|     when they should seek    |             |            |           |
|     medical help, if known;  |             |            |           |
+------------------------------+-------------+------------+-----------+
| (7) What the system is doing | §14         |            |           |
|     to correct the violation | 1.205(a)(7) |            |           |
|     or situation;            |             |            |           |
+------------------------------+-------------+------------+-----------+
| (8) When the water system    | §14         |            |           |
|     expects to return to     | 1.205(a)(8) |            |           |
|     compliance or resolve    |             |            |           |
|     the situation;           |             |            |           |
+------------------------------+-------------+------------+-----------+
| (9) The name, business       | §14         |            |           |
|     address, and phone       | 1.205(a)(9) |            |           |
|     number of the water      |             |            |           |
|     system owner, operator,  |             |            |           |
|     or designee of the PWS   |             |            |           |
|     as a source of           |             |            |           |
|     additional information   |             |            |           |
|     concerning the notice;   |             |            |           |
|     and                      |             |            |           |
+------------------------------+-------------+------------+-----------+
| \(10\) A statement to        | §141        |            |           |
| encourage the notice         | .205(a)(10) |            |           |
|                              |             |            |           |
| > recipient to distribute    |             |            |           |
| > the public notice to other |             |            |           |
| > persons served, using the  |             |            |           |
| > standard language under    |             |            |           |
| > paragraph (d)(3) of this   |             |            |           |
| > section, where applicable. |             |            |           |
+------------------------------+-------------+------------+-----------+
| **What Elements Must Be      | **§1        |            |           |
| Included in the Public       | 41.205(b)** |            |           |
| Notice for PWSs Operating    |             |            |           |
| Under a Variance or          |             |            |           |
| Exemption?**                 |             |            |           |
+------------------------------+-------------+------------+-----------+
| (1) If a PWS has been        |             |            |           |
|     granted a variance or an |             |            |           |
|     exemption, the public    |             |            |           |
|     notice must contain:     |             |            |           |
+------------------------------+-------------+------------+-----------+
| > \(i\) An explanation of    | §141.2      |            |           |
| > the reasons for the        | 05(b)(1)(i) |            |           |
| > variance or exemption;     |             |            |           |
+------------------------------+-------------+------------+-----------+
| > \(ii\) The date on which   | §141.20     |            |           |
| > the variance or exemption  | 5(b)(1)(ii) |            |           |
| > was issued;                |             |            |           |
+------------------------------+-------------+------------+-----------+
| > \(iii\) A brief status     | §141.205    |            |           |
| > report on the steps the    | (b)(1)(iii) |            |           |
| > system is taking to        |             |            |           |
| > install treatment, find    |             |            |           |
| > alternative sources of     |             |            |           |
| > water, or otherwise comply |             |            |           |
| > with the terms and         |             |            |           |
| > schedules of the variance  |             |            |           |
| > or exemption; and          |             |            |           |
+------------------------------+-------------+------------+-----------+
| > \(iv\) A notice of any     | §141.20     |            |           |
| > opportunity for public     | 5(b)(1)(iv) |            |           |
| > input in the review of the |             |            |           |
| > variance or exemption.     |             |            |           |
+------------------------------+-------------+------------+-----------+
| (2) If a PWS violates the    | §14         |            |           |
|     conditions of a variance | 1.205(b)(2) |            |           |
|     or exemption, the public |             |            |           |
|     notice must contain the  |             |            |           |
|     ten elements listed in   |             |            |           |
|     paragraph (a) of this    |             |            |           |
|     section.                 |             |            |           |
+------------------------------+-------------+------------+-----------+

+------------------------------+-------------+------------+-----------+
| **How is the Public Notice   | **§1        |            |           |
| to be Presented?**           | 41.205(c)** |            |           |
+==============================+=============+============+===========+
| (1) Each public notice       |             |            |           |
|     required by this         |             |            |           |
|     section:                 |             |            |           |
+------------------------------+-------------+------------+-----------+
| > \(i\) Must be displayed in | §141.2      |            |           |
| > a conspicuous way when     | 05(c)(1)(i) |            |           |
| > printed or posted;         |             |            |           |
+------------------------------+-------------+------------+-----------+
| > \(ii\) Must not contain    | §141.20     |            |           |
| > overly technical language  | 5(c)(1)(ii) |            |           |
| > or very small print;       |             |            |           |
+------------------------------+-------------+------------+-----------+
| > \(iii\) Must not be        | §141.205    |            |           |
| > formatted in a way that    | (c)(1)(iii) |            |           |
| > defeats the purpose of the |             |            |           |
| > notice; and                |             |            |           |
+------------------------------+-------------+------------+-----------+
| > \(iv\) Must not contain    | §141.20     |            |           |
| > language which nullifies   | 5(c)(1)(iv) |            |           |
| > the purpose of the notice. |             |            |           |
+------------------------------+-------------+------------+-----------+
| \(2\) Each public notice     | §14         |            |           |
| required by this section     | 1.205(c)(2) |            |           |
| must comply with             |             |            |           |
| multilingual requirements,   |             |            |           |
| as follows:                  |             |            |           |
+------------------------------+-------------+------------+-----------+
| > \(i\) For PWSs serving a   | §141.2      |            |           |
| > large proportion of        | 05(c)(2)(i) |            |           |
| > non-English speaking       |             |            |           |
| > consumers, as determined   |             |            |           |
| > by the primacy agency, the |             |            |           |
| > public notice must contain |             |            |           |
| > information in the         |             |            |           |
| > appropriate language(s)    |             |            |           |
| > regarding the importance   |             |            |           |
| > of the notice or contain a |             |            |           |
| > telephone number or        |             |            |           |
| > address where persons      |             |            |           |
| > served may contact the     |             |            |           |
| > water system to obtain a   |             |            |           |
| > translated copy of the     |             |            |           |
| > notice or to request       |             |            |           |
| > assistance in the          |             |            |           |
| > appropriate language.      |             |            |           |
+------------------------------+-------------+------------+-----------+
| > \(ii\) In cases where the  | §141.20     |            |           |
| > primacy agency has not     | 5(c)(2)(ii) |            |           |
| > determined what            |             |            |           |
| > constitutes a large        |             |            |           |
| > proportion of non-English  |             |            |           |
| > speaking consumers, the    |             |            |           |
| > PWS must include in the    |             |            |           |
| > public notice, the same    |             |            |           |
| > information as in          |             |            |           |
| > paragraph (c)(2)(i) of     |             |            |           |
| > this section, where        |             |            |           |
| > appropriate to reach a     |             |            |           |
| > large proportion of        |             |            |           |
| > non-English speaking       |             |            |           |
| > persons served by the      |             |            |           |
| > water system.              |             |            |           |
+------------------------------+-------------+------------+-----------+
| **What Standard Language     | **§1        |            |           |
| Must PWSs Include in Their   | 41.205(d)** |            |           |
| Public Notice?**             |             |            |           |
+------------------------------+-------------+------------+-----------+
| PWSs are required to include |             |            |           |
| the following standard       |             |            |           |
| language in their public     |             |            |           |
| notice:                      |             |            |           |
+------------------------------+-------------+------------+-----------+
| (1) Standard health effects  | §14         |            |           |
|     language for MCL or MRDL | 1.205(d)(1) |            |           |
|     violations, treatment    |             |            |           |
|     technique violations,    |             |            |           |
|     and violations of the    |             |            |           |
|     condition of a variance  |             |            |           |
|     or exemption.            |             |            |           |
|                              |             |            |           |
| > PWSs must include in each  |             |            |           |
| > public notice the health   |             |            |           |
| > effects language specified |             |            |           |
| > in Appendix B to this      |             |            |           |
| > subpart corresponding to   |             |            |           |
| > each MCL, MRDL, and        |             |            |           |
| > treatment technique        |             |            |           |
| > violation listed in        |             |            |           |
| > Appendix A to this         |             |            |           |
| > subpart, and for each      |             |            |           |
| > violation of a condition   |             |            |           |
| > of a variance or           |             |            |           |
| > exemption.                 |             |            |           |
+------------------------------+-------------+------------+-----------+
| (2) Standard language for    | §14         |            |           |
|     monitoring and testing   | 1.205(d)(2) |            |           |
|     procedure violations.    |             |            |           |
|                              |             |            |           |
| > PWSs must include the      |             |            |           |
| > following language in      |             |            |           |
| > their notice, including    |             |            |           |
| > the language necessary to  |             |            |           |
| > fill in the blanks, for    |             |            |           |
| > all monitoring and testing |             |            |           |
| > procedure violations       |             |            |           |
| > listed in Appendix A to    |             |            |           |
| > this subpart:              |             |            |           |
|                              |             |            |           |
| .                            |             |            |           |
|                              |             |            |           |
| > *"We are required to       |             |            |           |
| > monitor your drinking      |             |            |           |
| > water for specific         |             |            |           |
| > contaminants on a regular  |             |            |           |
| > basis. Results of regular  |             |            |           |
| > monitoring are an          |             |            |           |
| > indicator of whether or    |             |            |           |
| > not your drinking water    |             |            |           |
| > meets health standards.    |             |            |           |
| > During \[compliance        |             |            |           |
| > period\], we \['did not    |             |            |           |
| > monitor or test' or 'did   |             |            |           |
| > not complete all           |             |            |           |
| > monitoring or testing'\]   |             |            |           |
| > for \[contaminant(s)\],    |             |            |           |
| > and therefore cannot be    |             |            |           |
| > sure of the quality of     |             |            |           |
| > your drinking water during |             |            |           |
| > that time."*               |             |            |           |
+------------------------------+-------------+------------+-----------+
| (3) Standard language to     | §14         |            |           |
|     encourage the            | 1.205(d)(3) |            |           |
|     distribution of the      |             |            |           |
|     public notice to all     |             |            |           |
|     persons served.          |             |            |           |
|                              |             |            |           |
| > PWSs must include in their |             |            |           |
| > notice the following       |             |            |           |
| > language (where            |             |            |           |
| > applicable):               |             |            |           |
+------------------------------+-------------+------------+-----------+
| > *"Please share this        |             |            |           |
| > information with all the   |             |            |           |
| > other people who drink     |             |            |           |
| > this water, especially     |             |            |           |
| > those who may not have     |             |            |           |
| > received this notice       |             |            |           |
| > directly (for example,     |             |            |           |
| > people in apartments,      |             |            |           |
| > nursing homes, schools,    |             |            |           |
| > and businesses). You can   |             |            |           |
| > do this by posting this    |             |            |           |
| > notice in a public place   |             |            |           |
| > or distributing copies by  |             |            |           |
| > hand or mail."*            |             |            |           |
+------------------------------+-------------+------------+-----------+

+------------------------------+-------------+------------+-----------+
| **§141.206 - Notice to New   |             |            |           |
| Billing Units or New         |             |            |           |
| Customers**                  |             |            |           |
+==============================+=============+============+===========+
| **What is the Requirement    | **§1        |            |           |
| for Community Water          | 41.206(a)** |            |           |
| Systems?**                   |             |            |           |
+------------------------------+-------------+------------+-----------+
| CWSs must give a copy of the |             |            |           |
| most recent public notice    |             |            |           |
| for any continuing           |             |            |           |
| violation, the existence of  |             |            |           |
| a variance or exemption, or  |             |            |           |
| other ongoing situations     |             |            |           |
| requiring public notice to   |             |            |           |
| all new billing units or new |             |            |           |
| customers prior to or at the |             |            |           |
| time service begins.         |             |            |           |
+------------------------------+-------------+------------+-----------+
| **What is the Requirement    | **§1        |            |           |
| for Non-Community Water      | 41.206(b)** |            |           |
| Systems?**                   |             |            |           |
+------------------------------+-------------+------------+-----------+
| NCWSs must continuously post |             |            |           |
| the public notice in         |             |            |           |
| conspicuous locations in     |             |            |           |
| order to inform new          |             |            |           |
| consumers of any continuing  |             |            |           |
| violation, variance or       |             |            |           |
| exemption, or other          |             |            |           |
| situation requiring a public |             |            |           |
| notice for as long as the    |             |            |           |
| violation, variance,         |             |            |           |
| exemption, or other          |             |            |           |
| situation persists.          |             |            |           |
+------------------------------+-------------+------------+-----------+
| **§141.207- Special Notice   |             |            |           |
| of the Availability of       |             |            |           |
| Unregulated Contaminant      |             |            |           |
| Monitoring Results**         |             |            |           |
+------------------------------+-------------+------------+-----------+
| **When is the Special Notice | **§1        |            |           |
| to be Given?**               | 41.207(a)** |            |           |
+------------------------------+-------------+------------+-----------+
| The owner or operator of a   |             |            |           |
| community water system or    |             |            |           |
| non-transient, non-community |             |            |           |
| water system required to     |             |            |           |
| monitor under §141.40 must   |             |            |           |
| notify persons served by the |             |            |           |
| system of the availability   |             |            |           |
| of the results of such       |             |            |           |
| sampling no later than 12    |             |            |           |
| months after the monitoring  |             |            |           |
| results are known.           |             |            |           |
+------------------------------+-------------+------------+-----------+
| **What is the Form and       | **§1        |            |           |
| Manner of the Special        | 41.207(b)** |            |           |
| Notice?**                    |             |            |           |
|                              |             |            |           |
| The form and manner of the   |             |            |           |
| public notice must follow    |             |            |           |
| the requirements for a Tier  |             |            |           |
| 3 public notice prescribed   |             |            |           |
| in §§141.204(c), (d)(1), and |             |            |           |
| (d)(3). The notice must also |             |            |           |
| identify a person and        |             |            |           |
| provide the telephone number |             |            |           |
| to contact for information   |             |            |           |
| on the monitoring results.   |             |            |           |
+------------------------------+-------------+------------+-----------+
| **§141.208- Special Notice   |             |            |           |
| for Exceedance of the SMCL   |             |            |           |
| for Fluoride**               |             |            |           |
+------------------------------+-------------+------------+-----------+
| **When is the Special Notice | **§1        |            |           |
| to be Given?**               | 41.208(a)** |            |           |
+------------------------------+-------------+------------+-----------+
| CWSs that exceed the         |             |            |           |
| fluoride SMCL of 2 mg/l as   |             |            |           |
| specified in §143.3          |             |            |           |
| (determined by the last      |             |            |           |
| single sample taken in       |             |            |           |
| accordance with §141.23),    |             |            |           |
| but do not exceed the MCL of |             |            |           |
| 4 mg/l for fluoride (as      |             |            |           |
| specified in §141.62), must  |             |            |           |
| provide the public notice in |             |            |           |
| paragraph (c) of this        |             |            |           |
| section to persons served.   |             |            |           |
| Public notice must be        |             |            |           |
| provided as soon as          |             |            |           |
| practical but no later than  |             |            |           |
| 12 months from the day the   |             |            |           |
| water system learns of the   |             |            |           |
| exceedance.                  |             |            |           |
+------------------------------+-------------+------------+-----------+
| A copy of the notice must    |             |            |           |
| also be sent to all new      |             |            |           |
| billing units and new        |             |            |           |
| customers at the time        |             |            |           |
| service begins and to the    |             |            |           |
| State public health officer. |             |            |           |
| The PWS must repeat the      |             |            |           |
| notice at least annually for |             |            |           |
| as long as the SMCL is       |             |            |           |
| exceeded. If the public      |             |            |           |
| notice is posted, the notice |             |            |           |
| must remain in place for as  |             |            |           |
| long as the SMCL is          |             |            |           |
| exceeded, but in no case     |             |            |           |
| less than seven days (even   |             |            |           |
| if the exceedance is         |             |            |           |
| eliminated). On a            |             |            |           |
| case-by-case basis, the      |             |            |           |
| primacy agency may require   |             |            |           |
| an initial notice sooner     |             |            |           |
| than 12 months and repeat    |             |            |           |
| notices more frequently than |             |            |           |
| annually.                    |             |            |           |
+------------------------------+-------------+------------+-----------+

+------------------------------+-------------+------------+-----------+
| **What is the Form and       | **§1        |            |           |
| Manner of the Special        | 41.208(b)** |            |           |
| Notice?**                    |             |            |           |
+==============================+=============+============+===========+
| The form and manner of the   |             |            |           |
| public notice (including     |             |            |           |
| repeat notices) must follow  |             |            |           |
| the requirements for a Tier  |             |            |           |
| 3 public notice in           |             |            |           |
| §§141.204(c), (d)(1), and    |             |            |           |
| (d)(3).                      |             |            |           |
+------------------------------+-------------+------------+-----------+
| **What Mandatory Language    | **§1        |            |           |
| Must Be Contained in the     | 41.208(c)** |            |           |
| Special Notice?**            |             |            |           |
+------------------------------+-------------+------------+-----------+
| The notice must contain the  |             |            |           |
| following language,          |             |            |           |
| including the language       |             |            |           |
| necessary to fill in the     |             |            |           |
| blanks:                      |             |            |           |
+------------------------------+-------------+------------+-----------+
| > *'"This is an alert about  |             |            |           |
| > your drinking water and a  |             |            |           |
| > cosmetic dental problem    |             |            |           |
| > that might affect children |             |            |           |
| > under nine years of age.   |             |            |           |
| > At low levels, fluoride    |             |            |           |
| > can help prevent cavities, |             |            |           |
| > but children drinking      |             |            |           |
| > water containing more than |             |            |           |
| > 2 milligrams per liter     |             |            |           |
| > (mg/l) of fluoride may     |             |            |           |
| > develop cosmetic           |             |            |           |
| > discoloration of their     |             |            |           |
| > permanent teeth (dental    |             |            |           |
| > fluorosis). The drinking   |             |            |           |
| > water provided by your     |             |            |           |
| > community water system     |             |            |           |
| > \[name\] has a fluoride    |             |            |           |
| > concentration of \[insert  |             |            |           |
| > value\] mg/l.*             |             |            |           |
+------------------------------+-------------+------------+-----------+
| > *Dental fluorosis, in its  |             |            |           |
| > moderate or severe forms,  |             |            |           |
| > may result in a brown      |             |            |           |
| > staining and/or pitting of |             |            |           |
| > the permanent teeth. This  |             |            |           |
| > problem occurs only in     |             |            |           |
| > developing teeth, before   |             |            |           |
| > they erupt from the gums.  |             |            |           |
| > Children under nine should |             |            |           |
| > be provided with           |             |            |           |
| > alternative sources of     |             |            |           |
| > drinking water or water    |             |            |           |
| > that has been treated to   |             |            |           |
| > remove the fluoride to     |             |            |           |
| > avoid the possibility of   |             |            |           |
| > staining and pitting of    |             |            |           |
| > their permanent teeth. You |             |            |           |
| > may also want to contact   |             |            |           |
| > your dentist about proper  |             |            |           |
| > use by young children of   |             |            |           |
| > fluoride-containing        |             |            |           |
| > products. Older children   |             |            |           |
| > and adults may safely      |             |            |           |
| > drink the water.*          |             |            |           |
+------------------------------+-------------+------------+-----------+
| > *Drinking water containing |             |            |           |
| > more than 4 mg/l of        |             |            |           |
| > fluoride (the U.S.         |             |            |           |
| > Environmental Protection   |             |            |           |
| > Agency's drinking water    |             |            |           |
| > standard) can increase     |             |            |           |
| > your risk of developing    |             |            |           |
| > bone disease. Your         |             |            |           |
| > drinking water does not    |             |            |           |
| > contain more than 4 mg/l   |             |            |           |
| > of fluoride, but we're     |             |            |           |
| > required to notify you     |             |            |           |
| > when we discover that the  |             |            |           |
| > fluoride levels in your    |             |            |           |
| > drinking water exceed 2    |             |            |           |
| > mg/l because of this       |             |            |           |
| > cosmetic dental problem.*  |             |            |           |
+------------------------------+-------------+------------+-----------+
| > *For more information,     |             |            |           |
| > please call \[name of your |             |            |           |
| > water system contact\] of  |             |            |           |
| > \[name of community water  |             |            |           |
| > system\] at \[phone        |             |            |           |
| > number\]. Some home water  |             |            |           |
| > treatment units are also   |             |            |           |
| > available to remove        |             |            |           |
| > fluoride from drinking     |             |            |           |
| > water. To learn more about |             |            |           |
| > available home water       |             |            |           |
| > treatment units, you may   |             |            |           |
| > call NSF International at  |             |            |           |
| > 1-877-NSF-HELP."*          |             |            |           |
+------------------------------+-------------+------------+-----------+

+------------------------------+-------------+------------+-----------+
| **§141.209 - Special Notice  |             |            |           |
| for Nitrate Exceedances      |             |            |           |
| Above MCL by Non-Community   |             |            |           |
| Water**                      |             |            |           |
|                              |             |            |           |
| > **Systems (NCWS), Where    |             |            |           |
| > Granted Permission by the  |             |            |           |
| > Primacy Agency under       |             |            |           |
| > §141.11(d)**               |             |            |           |
+==============================+=============+============+===========+
| **When is the Special Notice | **§1        |            |           |
| to be Given?**               | 41.209(a)** |            |           |
+------------------------------+-------------+------------+-----------+
| The owner or operator of a   |             |            |           |
| non-community water system   |             |            |           |
| granted permission by the    |             |            |           |
| primacy agency under         |             |            |           |
| §141.11(d) to exceed the     |             |            |           |
| nitrate MCL must provide     |             |            |           |
| notice to persons served     |             |            |           |
| according to the             |             |            |           |
| requirements for a Tier 1    |             |            |           |
| notice under §141.202(a) and |             |            |           |
| (b).                         |             |            |           |
+------------------------------+-------------+------------+-----------+
| **What is the Form and       | **§1        |            |           |
| Manner of the Special        | 41.209(b)** |            |           |
| Notice?**                    |             |            |           |
+------------------------------+-------------+------------+-----------+
| Non-community water systems  |             |            |           |
| granted permission by the    |             |            |           |
| primacy agency to exceed the |             |            |           |
| nitrate MCL under §141.11(d) |             |            |           |
| must provide continuous      |             |            |           |
| posting of the fact that     |             |            |           |
| nitrate levels exceed 10     |             |            |           |
| mg/l and the potential       |             |            |           |
| health effects of exposure,  |             |            |           |
| according to the             |             |            |           |
| requirements for Tier 1      |             |            |           |
| notice delivery under        |             |            |           |
| §141.202(c) and the content  |             |            |           |
| requirements under §141.205. |             |            |           |
+------------------------------+-------------+------------+-----------+

  ---------------------------------------------------------------------------
  **§141.210 - Notice By Primacy                                 
  Agency On Behalf of the Public                                 
  Water System**                                                 
  ------------------------------- ----------------- ------------ ------------
  **May the Primacy Agency Give   **§141.210(a)**                
  Notice on Behalf of the PWS?**                                 

  The primacy agency may give the                                
  notice required by this subpart                                
  on behalf of the owner and                                     
  operator of the PWS if the                                     
  primacy agency complies with                                   
  the requirements of this                                       
  subpart.                                                       

  **What is the Responsibility of **§141.210(b)**                
  the PWS When Notice is Given by                                
  the Primacy Agency?**                                          

  The owner or operator of the                                   
  PWS remains responsible for                                    
  ensuring that the requirements                                 
  of this subpart are met.                                       
  ---------------------------------------------------------------------------

**Appendix A to Subpart O -- Regulated Contaminants**

[Key]{.underline}

**AL**=Action Level

**MCL**=Maximum Contaminant Level

**MCLG**=Maximum Contaminant Level Goal

**MFL**=million fibers per liter

**MRDL**=Maximum Residual Disinfectant Level

**MRDLG**=Maximum Residual Disinfectant Level Goal

**mrem/year**=millirems per year (a measure of radiation absorbed by the
body)

**N/A**=Not Applicable

**NTU**=Nephelometric Turbidity Units

(a measure of water clarity)

**pCi/l**=picocuries per liter (a measure of radioactivity)

**ppm**=parts per million, or milligrams per liter (mg/l)

**ppb**=parts per billion, or micrograms

per liter (g/l)

**ppt**=parts per trillion, or nanograms per liter

**ppq**=parts per quadrillion, or picograms per liter

**TT**=Treatment Technique

+----------+-----+-----+----+----+-------------+----------------------+
| **Con    | *   | *   | *  | ** | **Major     | **Health Effects     |
| taminant | *Tr | *To | *M | MC | Sources in  | Language**           |
| (        | adi | c   | CL | LG | Drinking    |                      |
| units)** | tio | onv | in | ** | Water**     |                      |
|          | nal | ert | C  |    |             |                      |
|          | MCL | for | CR |    |             |                      |
|          | in  | C   | u  |    |             |                      |
|          | mg/ | CR, | ni |    |             |                      |
|          | L** | mu  | ts |    |             |                      |
|          |     | lti | ** |    |             |                      |
|          |     | ply |    |    |             |                      |
|          |     | b   |    |    |             |                      |
|          |     | y** |    |    |             |                      |
+==========+=====+=====+====+====+=============+======================+
| *        |     |     |    |    |             |                      |
| *Microbi |     |     |    |    |             |                      |
| ological |     |     |    |    |             |                      |
| Contam   |     |     |    |    |             |                      |
| inants** |     |     |    |    |             |                      |
+----------+-----+-----+----+----+-------------+----------------------+
| Total    | M   |     |    | 0  | Naturally   | Coliforms are        |
| Coliform | CL: |     |    |    | present in  | bacteria that are    |
| Bacteria | (s  |     |    |    | the         | naturally present in |
|          | yst |     |    |    | environment | the environment and  |
|          | ems |     |    |    |             | are used as an       |
|          | t   |     |    |    |             | indicator that       |
|          | hat |     |    |    |             | other,               |
|          | c   |     |    |    |             | potentially-harmful, |
|          | oll |     |    |    |             | bacteria may be      |
|          | ect |     |    |    |             | present. Coliforms   |
|          | 40 |     |    |    |             | were found in more   |
|          | sa  |     |    |    |             | samples than allowed |
|          | mpl |     |    |    |             | and this was a       |
|          | es/ |     |    |    |             | warning of potential |
|          | mon |     |    |    |             | problems.            |
|          | th) |     |    |    |             |                      |
|          | 5%  |     |    |    |             |                      |
|          | of  |     |    |    |             |                      |
|          | m   |     |    |    |             |                      |
|          | ont |     |    |    |             |                      |
|          | hly |     |    |    |             |                      |
|          | s   |     |    |    |             |                      |
|          | amp |     |    |    |             |                      |
|          | les |     |    |    |             |                      |
|          | are |     |    |    |             |                      |
|          | pos |     |    |    |             |                      |
|          | iti |     |    |    |             |                      |
|          | ve; |     |    |    |             |                      |
|          | (s  |     |    |    |             |                      |
|          | yst |     |    |    |             |                      |
|          | ems |     |    |    |             |                      |
|          | t   |     |    |    |             |                      |
|          | hat |     |    |    |             |                      |
|          | c   |     |    |    |             |                      |
|          | oll |     |    |    |             |                      |
|          | ect |     |    |    |             |                      |
|          | \<  |     |    |    |             |                      |
|          | 40  |     |    |    |             |                      |
|          | sa  |     |    |    |             |                      |
|          | mpl |     |    |    |             |                      |
|          | es/ |     |    |    |             |                      |
|          | mon |     |    |    |             |                      |
|          | th) |     |    |    |             |                      |
|          | 1   |     |    |    |             |                      |
|          | po  |     |    |    |             |                      |
|          | sit |     |    |    |             |                      |
|          | ive |     |    |    |             |                      |
|          | m   |     |    |    |             |                      |
|          | ont |     |    |    |             |                      |
|          | hly |     |    |    |             |                      |
|          | sam |     |    |    |             |                      |
|          | ple |     |    |    |             |                      |
+----------+-----+-----+----+----+-------------+----------------------+
| Fecal    | > 0 |     |    | 0  | Human and   |                      |
| coliform |     |     |    |    | animal      |                      |
| and      |     |     |    |    | fecal waste |                      |
|          |     |     |    |    |             |                      |
| *E.      |     |     |    |    |             |                      |
| coli*    |     |     |    |    |             |                      |
+----------+-----+-----+----+----+-------------+----------------------+

+----------+-----+-----+----+----+-------------+----------------------+
|          |     |     | F  |    |             |                      |
|          |     |     | ec |    |             |                      |
|          |     |     | al |    |             |                      |
|          |     |     | c  |    |             |                      |
|          |     |     | ol |    |             |                      |
|          |     |     | if |    |             |                      |
|          |     |     | or |    |             |                      |
|          |     |     | ms |    |             |                      |
|          |     |     | a  |    |             |                      |
|          |     |     | nd |    |             |                      |
|          |     |     | *  |    |             |                      |
|          |     |     | E. |    |             |                      |
|          |     |     | c  |    |             |                      |
|          |     |     | ol |    |             |                      |
|          |     |     | i* |    |             |                      |
|          |     |     | a  |    |             |                      |
|          |     |     | re |    |             |                      |
|          |     |     | ba |    |             |                      |
|          |     |     | ct |    |             |                      |
|          |     |     | er |    |             |                      |
|          |     |     | ia |    |             |                      |
|          |     |     | w  |    |             |                      |
|          |     |     | ho |    |             |                      |
|          |     |     | se |    |             |                      |
|          |     |     | pr |    |             |                      |
|          |     |     | es |    |             |                      |
|          |     |     | en |    |             |                      |
|          |     |     | ce |    |             |                      |
|          |     |     | i  |    |             |                      |
|          |     |     | nd |    |             |                      |
|          |     |     | ic |    |             |                      |
|          |     |     | at |    |             |                      |
|          |     |     | es |    |             |                      |
|          |     |     | th |    |             |                      |
|          |     |     | at |    |             |                      |
|          |     |     | t  |    |             |                      |
|          |     |     | he |    |             |                      |
|          |     |     | w  |    |             |                      |
|          |     |     | at |    |             |                      |
|          |     |     | er |    |             |                      |
|          |     |     | m  |    |             |                      |
|          |     |     | ay |    |             |                      |
|          |     |     | be |    |             |                      |
|          |     |     | co |    |             |                      |
|          |     |     | nt |    |             |                      |
|          |     |     | am |    |             |                      |
|          |     |     | in |    |             |                      |
|          |     |     | at |    |             |                      |
|          |     |     | ed |    |             |                      |
|          |     |     | wi |    |             |                      |
|          |     |     | th |    |             |                      |
|          |     |     | h  |    |             |                      |
|          |     |     | um |    |             |                      |
|          |     |     | an |    |             |                      |
|          |     |     | or |    |             |                      |
|          |     |     | an |    |             |                      |
|          |     |     | im |    |             |                      |
|          |     |     | al |    |             |                      |
|          |     |     | w  |    |             |                      |
|          |     |     | as |    |             |                      |
|          |     |     | te |    |             |                      |
|          |     |     | s. |    |             |                      |
|          |     |     | Mi |    |             |                      |
|          |     |     | cr |    |             |                      |
|          |     |     | ob |    |             |                      |
|          |     |     | es |    |             |                      |
|          |     |     | in |    |             |                      |
|          |     |     | t  |    |             |                      |
|          |     |     | he |    |             |                      |
|          |     |     | se |    |             |                      |
|          |     |     | wa |    |             |                      |
|          |     |     | st |    |             |                      |
|          |     |     | es |    |             |                      |
|          |     |     | c  |    |             |                      |
|          |     |     | an |    |             |                      |
|          |     |     | c  |    |             |                      |
|          |     |     | au |    |             |                      |
|          |     |     | se |    |             |                      |
|          |     |     | sh |    |             |                      |
|          |     |     | or |    |             |                      |
|          |     |     | t- |    |             |                      |
|          |     |     | te |    |             |                      |
|          |     |     | rm |    |             |                      |
|          |     |     | ef |    |             |                      |
|          |     |     | fe |    |             |                      |
|          |     |     | ct |    |             |                      |
|          |     |     | s, |    |             |                      |
|          |     |     | su |    |             |                      |
|          |     |     | ch |    |             |                      |
|          |     |     | as |    |             |                      |
|          |     |     | d  |    |             |                      |
|          |     |     | ia |    |             |                      |
|          |     |     | rr |    |             |                      |
|          |     |     | he |    |             |                      |
|          |     |     | a, |    |             |                      |
|          |     |     | c  |    |             |                      |
|          |     |     | ra |    |             |                      |
|          |     |     | mp |    |             |                      |
|          |     |     | s, |    |             |                      |
|          |     |     | n  |    |             |                      |
|          |     |     | au |    |             |                      |
|          |     |     | se |    |             |                      |
|          |     |     | a, |    |             |                      |
|          |     |     | he |    |             |                      |
|          |     |     | ad |    |             |                      |
|          |     |     | ac |    |             |                      |
|          |     |     | he |    |             |                      |
|          |     |     | s, |    |             |                      |
|          |     |     | or |    |             |                      |
|          |     |     | o  |    |             |                      |
|          |     |     | th |    |             |                      |
|          |     |     | er |    |             |                      |
|          |     |     | s  |    |             |                      |
|          |     |     | ym |    |             |                      |
|          |     |     | pt |    |             |                      |
|          |     |     | om |    |             |                      |
|          |     |     | s. |    |             |                      |
|          |     |     | Th |    |             |                      |
|          |     |     | ey |    |             |                      |
|          |     |     | m  |    |             |                      |
|          |     |     | ay |    |             |                      |
|          |     |     | po |    |             |                      |
|          |     |     | se |    |             |                      |
|          |     |     | a  |    |             |                      |
|          |     |     | s  |    |             |                      |
|          |     |     | pe |    |             |                      |
|          |     |     | ci |    |             |                      |
|          |     |     | al |    |             |                      |
|          |     |     | he |    |             |                      |
|          |     |     | al |    |             |                      |
|          |     |     | th |    |             |                      |
|          |     |     | ri |    |             |                      |
|          |     |     | sk |    |             |                      |
|          |     |     | f  |    |             |                      |
|          |     |     | or |    |             |                      |
|          |     |     | in |    |             |                      |
|          |     |     | fa |    |             |                      |
|          |     |     | nt |    |             |                      |
|          |     |     | s, |    |             |                      |
|          |     |     | y  |    |             |                      |
|          |     |     | ou |    |             |                      |
|          |     |     | ng |    |             |                      |
|          |     |     | c  |    |             |                      |
|          |     |     | hi |    |             |                      |
|          |     |     | ld |    |             |                      |
|          |     |     | re |    |             |                      |
|          |     |     | n, |    |             |                      |
|          |     |     | so |    |             |                      |
|          |     |     | me |    |             |                      |
|          |     |     | of |    |             |                      |
|          |     |     | t  |    |             |                      |
|          |     |     | he |    |             |                      |
|          |     |     | el |    |             |                      |
|          |     |     | de |    |             |                      |
|          |     |     | rl |    |             |                      |
|          |     |     | y, |    |             |                      |
|          |     |     | a  |    |             |                      |
|          |     |     | nd |    |             |                      |
|          |     |     | pe |    |             |                      |
|          |     |     | op |    |             |                      |
|          |     |     | le |    |             |                      |
|          |     |     | wi |    |             |                      |
|          |     |     | th |    |             |                      |
|          |     |     | se |    |             |                      |
|          |     |     | ve |    |             |                      |
|          |     |     | re |    |             |                      |
|          |     |     | ly |    |             |                      |
|          |     |     | -c |    |             |                      |
|          |     |     | om |    |             |                      |
|          |     |     | pr |    |             |                      |
|          |     |     | om |    |             |                      |
|          |     |     | is |    |             |                      |
|          |     |     | ed |    |             |                      |
|          |     |     | im |    |             |                      |
|          |     |     | mu |    |             |                      |
|          |     |     | ne |    |             |                      |
|          |     |     | sy |    |             |                      |
|          |     |     | st |    |             |                      |
|          |     |     | em |    |             |                      |
|          |     |     | s. |    |             |                      |
+----------+-----+-----+----+----+-------------+----------------------+
| Total    | TT  | \-  | TT | n  | Naturally   | Total organic carbon |
| organic  |     |     |    | /a | present in  | (TOC) has no health  |
| carbon   |     |     |    |    | the         | effects. However,    |
| (ppm)    |     |     |    |    | environment | total organic carbon |
|          |     |     |    |    |             | provides a medium    |
|          |     |     |    |    |             | for the formation of |
|          |     |     |    |    |             | disinfection by      |
|          |     |     |    |    |             | products. These      |
|          |     |     |    |    |             | byproducts include   |
|          |     |     |    |    |             | trihalomethanes      |
|          |     |     |    |    |             | (THMs) and           |
|          |     |     |    |    |             | haloacetic acids     |
|          |     |     |    |    |             | (HAAs). Drinking     |
|          |     |     |    |    |             | water containing     |
|          |     |     |    |    |             | these byproducts in  |
|          |     |     |    |    |             | excess of the MCL    |
|          |     |     |    |    |             | may lead to adverse  |
|          |     |     |    |    |             | health effects,      |
|          |     |     |    |    |             | liver or kidney      |
|          |     |     |    |    |             | problems, or nervous |
|          |     |     |    |    |             | system effects, and  |
|          |     |     |    |    |             | may lead to an       |
|          |     |     |    |    |             | increased risk of    |
|          |     |     |    |    |             | getting cancer.      |
+----------+-----+-----+----+----+-------------+----------------------+
| T        | TT  | \-  | TT | n  | Soil runoff | Turbidity has no     |
| urbidity |     |     |    | /a |             | health effects.      |
| (NTU)    |     |     |    |    |             | However, turbidity   |
|          |     |     |    |    |             | can interfere with   |
|          |     |     |    |    |             | disinfection and     |
|          |     |     |    |    |             | provide a medium for |
|          |     |     |    |    |             | microbial growth.    |
|          |     |     |    |    |             | Turbidity may        |
|          |     |     |    |    |             | indicate the         |
|          |     |     |    |    |             | presence of          |
|          |     |     |    |    |             | disease-causing      |
|          |     |     |    |    |             | organisms. These     |
|          |     |     |    |    |             | organisms include    |
|          |     |     |    |    |             | bacteria, viruses,   |
|          |     |     |    |    |             | and parasites that   |
|          |     |     |    |    |             | can cause symptoms   |
|          |     |     |    |    |             | such as nausea,      |
|          |     |     |    |    |             | cramps, diarrhea and |
|          |     |     |    |    |             | associated           |
|          |     |     |    |    |             | headaches.           |
+----------+-----+-----+----+----+-------------+----------------------+
| **Rad    |     |     |    |    |             |                      |
| ioactive |     |     |    |    |             |                      |
| Contam   |     |     |    |    |             |                      |
| inants** |     |     |    |    |             |                      |
+----------+-----+-----+----+----+-------------+----------------------+
| Bet      | 4   | \-  | 4  | 0  | Decay of    | Certain minerals are |
| a/photon | m   |     |    |    | natural and | radioactive and may  |
| emitters | rem |     |    |    | man-made    | emit forms of        |
|          | /yr |     |    |    | deposits    | radiation known as   |
| (        |     |     |    |    |             | photons and beta     |
| mrem/yr) |     |     |    |    |             | radiation. Some      |
|          |     |     |    |    |             | people who drink     |
|          |     |     |    |    |             | water containing     |
|          |     |     |    |    |             | beta and photon      |
|          |     |     |    |    |             | emitters in excess   |
|          |     |     |    |    |             | of the MCL over many |
|          |     |     |    |    |             | years may have an    |
|          |     |     |    |    |             | increased risk of    |
|          |     |     |    |    |             | getting cancer.      |
+----------+-----+-----+----+----+-------------+----------------------+
| Alpha    | 15  | \-  | 15 | 0  | Erosion of  | Certain minerals are |
| emitters | pC  |     |    |    | natural     | radioactive and may  |
|          | i/l |     |    |    | deposits    | emit a form of       |
| (pCi/l)  |     |     |    |    |             | radiation known as   |
|          |     |     |    |    |             | alpha radiation.     |
|          |     |     |    |    |             | Some people who      |
|          |     |     |    |    |             | drink water          |
|          |     |     |    |    |             | containing alpha     |
|          |     |     |    |    |             | emitters in excess   |
|          |     |     |    |    |             | of the MCL over many |
|          |     |     |    |    |             | years may have an    |
|          |     |     |    |    |             | increased risk of    |
|          |     |     |    |    |             | getting cancer.      |
+----------+-----+-----+----+----+-------------+----------------------+
| Combined | 5   | \-  | 5  | 0  | Erosion of  | Some people who      |
| radium   | pC  |     |    |    | natural     | drink water          |
| (pCi/l)  | i/l |     |    |    | deposits    | containing radium    |
|          |     |     |    |    |             | 226 or 228 in excess |
|          |     |     |    |    |             | of the MCL over many |
|          |     |     |    |    |             | years may have an    |
|          |     |     |    |    |             | increased risk of    |
|          |     |     |    |    |             | getting cancer.      |
+----------+-----+-----+----+----+-------------+----------------------+
| Uranium  | 30  | \-  | 30 | 0  | Erosion of  | Some people who      |
|          | g/ |     |    |    | natural     | drink water          |
| (g/l)   | l\* |     |    |    | deposits    | containing uranium   |
|          |     |     |    |    |             | in excess of the MCL |
|          |     |     |    |    |             | over many years may  |
|          |     |     |    |    |             | have an increased    |
|          |     |     |    |    |             | risk of getting      |
|          |     |     |    |    |             | cancer and kidney    |
|          |     |     |    |    |             | toxicity.            |
+----------+-----+-----+----+----+-------------+----------------------+
|          | **  |     |    |    |             |                      |
|          | *\* |     |    |    |             |                      |
|          | U   |     |    |    |             |                      |
|          | ran |     |    |    |             |                      |
|          | ium |     |    |    |             |                      |
|          | MCL |     |    |    |             |                      |
|          | is  |     |    |    |             |                      |
|          | eff |     |    |    |             |                      |
|          | ect |     |    |    |             |                      |
|          | ive |     |    |    |             |                      |
|          | De  |     |    |    |             |                      |
|          | cem |     |    |    |             |                      |
|          | ber |     |    |    |             |                      |
|          | 8,  |     |    |    |             |                      |
|          | 20  |     |    |    |             |                      |
|          | 03. |     |    |    |             |                      |
|          | *** |     |    |    |             |                      |
+----------+-----+-----+----+----+-------------+----------------------+
| **I      |     |     |    |    |             |                      |
| norganic |     |     |    |    |             |                      |
| Contam   |     |     |    |    |             |                      |
| inants** |     |     |    |    |             |                      |
+----------+-----+-----+----+----+-------------+----------------------+
| Antimony | .   | 1   | 6  | 6  | Discharge   | Some people who      |
| (ppb)    | 006 | 000 |    |    | from        | drink water          |
|          |     |     |    |    | petroleum   | containing antimony  |
|          |     |     |    |    | refineries; | well in excess of    |
|          |     |     |    |    | fire        | the MCL over many    |
|          |     |     |    |    | retardants; | years could          |
|          |     |     |    |    | ceramics;   | experience increases |
|          |     |     |    |    | e           | in blood cholesterol |
|          |     |     |    |    | lectronics; | and decreases in     |
|          |     |     |    |    | solder      | blood sugar.         |
+----------+-----+-----+----+----+-------------+----------------------+
| Arsenic  | 0.0 | 1   | 10 | 0  | Erosion of  | Some people who      |
| (ppb)    | 1\* | 000 | \* | \* | natural     | drink water          |
|          |     |     |    |    | deposits;   | containing arsenic   |
|          |     |     |    |    | Runoff from | in excess of the MCL |
|          |     |     |    |    | orchards;   | over many years      |
|          |     |     |    |    | Runoff from | could experience     |
|          |     |     |    |    | glass and   | skin damage or       |
|          |     |     |    |    | electronics | problems with their  |
|          |     |     |    |    | production  | circulatory system,  |
|          |     |     |    |    | wastes      | and may have an      |
|          |     |     |    |    |             | increased risk of    |
|          |     |     |    |    |             | getting cancer.      |
+----------+-----+-----+----+----+-------------+----------------------+
|          | **  |     |    |    |             |                      |
|          | *\* |     |    |    |             |                      |
|          | A   |     |    |    |             |                      |
|          | rse |     |    |    |             |                      |
|          | nic |     |    |    |             |                      |
|          | val |     |    |    |             |                      |
|          | ues |     |    |    |             |                      |
|          | are |     |    |    |             |                      |
|          | eff |     |    |    |             |                      |
|          | ect |     |    |    |             |                      |
|          | ive |     |    |    |             |                      |
|          | J   |     |    |    |             |                      |
|          | anu |     |    |    |             |                      |
|          | ary |     |    |    |             |                      |
|          | 23, |     |    |    |             |                      |
|          | 20  |     |    |    |             |                      |
|          | 06. |     |    |    |             |                      |
|          | Un  |     |    |    |             |                      |
|          | til |     |    |    |             |                      |
|          | th  |     |    |    |             |                      |
|          | en, |     |    |    |             |                      |
|          | the |     |    |    |             |                      |
|          | MCL |     |    |    |             |                      |
|          | is  |     |    |    |             |                      |
|          | 0   |     |    |    |             |                      |
|          | .05 |     |    |    |             |                      |
|          | m   |     |    |    |             |                      |
|          | g/l |     |    |    |             |                      |
|          | and |     |    |    |             |                      |
|          | th  |     |    |    |             |                      |
|          | ere |     |    |    |             |                      |
|          | is  |     |    |    |             |                      |
|          | no  |     |    |    |             |                      |
|          | MC  |     |    |    |             |                      |
|          | LG. |     |    |    |             |                      |
|          | *** |     |    |    |             |                      |
+----------+-----+-----+----+----+-------------+----------------------+
| Asbestos | 7   | \-  | 7  | 7  | Decay of    | Some people who      |
| (MFL)    | MFL |     |    |    | asbestos    | drink water          |
|          |     |     |    |    | cement      | containing asbestos  |
|          |     |     |    |    | water       | in excess of the MCL |
|          |     |     |    |    | mains;      | over many years may  |
|          |     |     |    |    | Erosion of  | have an increased    |
|          |     |     |    |    | natural     | risk of developing   |
|          |     |     |    |    | deposits    | benign intestinal    |
|          |     |     |    |    |             | polyps.              |
+----------+-----+-----+----+----+-------------+----------------------+
| Barium   | 2   | \-  | 2  | 2  | Discharge   | Some people who      |
| (ppm)    |     |     |    |    | of drilling | drink water          |
|          |     |     |    |    | wastes;     | containing barium in |
|          |     |     |    |    | Discharge   | excess of the MCL    |
|          |     |     |    |    | from metal  | over many years      |
|          |     |     |    |    | refineries; | could experience an  |
|          |     |     |    |    | Erosion of  | increase in their    |
|          |     |     |    |    | natural     | blood pressure.      |
|          |     |     |    |    | deposits    |                      |
+----------+-----+-----+----+----+-------------+----------------------+
| B        | .   | 1   | 4  | 4  | Discharge   | Some people who      |
| eryllium | 004 | 000 |    |    | from metal  | drink water          |
| (ppb)    |     |     |    |    | refineries  | containing beryllium |
|          |     |     |    |    | and         | well in excess of    |
|          |     |     |    |    | c           | the MCL over many    |
|          |     |     |    |    | oal-burning | years could develop  |
|          |     |     |    |    | factories;  | intestinal lesions.  |
|          |     |     |    |    | Discharge   |                      |
|          |     |     |    |    | from        |                      |
|          |     |     |    |    | electrical, |                      |
|          |     |     |    |    | aerospace,  |                      |
|          |     |     |    |    | and defense |                      |
|          |     |     |    |    | industries  |                      |
+----------+-----+-----+----+----+-------------+----------------------+
| Bro      | .   | 1   | 10 | 0  | By-product  | Some people who      |
| mate[^1] | 010 | 000 |    |    | of drinking | drink water          |
|          |     |     |    |    | water       | containing bromate   |
| (ppb)    |     |     |    |    | c           | in excess of the MCL |
|          |     |     |    |    | hlorination | over many years may  |
|          |     |     |    |    |             | have an increased    |
|          |     |     |    |    |             | risk of getting      |
|          |     |     |    |    |             | cancer.              |
+----------+-----+-----+----+----+-------------+----------------------+
| Cadmium  | .   | 1   | 5  | 5  | Corrosion   | Some people who      |
| (ppb)    | 005 | 000 |    |    | of          | drink water          |
|          |     |     |    |    | galvanized  | containing cadmium   |
|          |     |     |    |    | pipes;      | in excess of the MCL |
|          |     |     |    |    | Erosion of  | over many years      |
|          |     |     |    |    | natural     | could experience     |
|          |     |     |    |    | deposits;   | kidney damage.       |
|          |     |     |    |    | Discharge   |                      |
|          |     |     |    |    | from metal  |                      |
|          |     |     |    |    | refineries; |                      |
|          |     |     |    |    | Runoff from |                      |
|          |     |     |    |    | waste       |                      |
|          |     |     |    |    | batteries   |                      |
|          |     |     |    |    | and paints  |                      |
+----------+-----+-----+----+----+-------------+----------------------+
| Chlora   | M   | \-  | MR | M  | Water       | Some people who use  |
| mines^1^ | RDL |     | DL | RD | additive    | water containing     |
|          |     |     |    | LG | used to     | chloramines well in  |
| (ppm)    | = 4 |     | =  | =  | control     | excess of the MRDL   |
|          |     |     | 4  | 4  | microbes    | could experience     |
|          |     |     |    |    |             | irritating effects   |
|          |     |     |    |    |             | to their eyes and    |
|          |     |     |    |    |             | nose. Some people    |
|          |     |     |    |    |             | who drink water      |
|          |     |     |    |    |             | containing           |
|          |     |     |    |    |             | chloramines well in  |
|          |     |     |    |    |             | excess of the MRDL   |
|          |     |     |    |    |             | could experience     |
|          |     |     |    |    |             | stomach discomfort   |
|          |     |     |    |    |             | or anemia.           |
+----------+-----+-----+----+----+-------------+----------------------+
| Chlo     | M   | \-  | MR | M  | Water       | Some people who use  |
| rine[^2] | RDL |     | DL | RD | additive    | water containing     |
|          |     |     |    | LG | used to     | chlorine well in     |
| (ppm)    | = 4 |     | =  |    | control     | excess of the MRDL   |
|          |     |     | 4  | =  | microbes    | could experience     |
|          |     |     |    | 4  |             | irritating effects   |
|          |     |     |    |    |             | to their eyes and    |
|          |     |     |    |    |             | nose. Some people    |
|          |     |     |    |    |             | who drink water      |
|          |     |     |    |    |             | containing chlorine  |
|          |     |     |    |    |             | well in excess of    |
|          |     |     |    |    |             | the MRDL could       |
|          |     |     |    |    |             | experience stomach   |
|          |     |     |    |    |             | discomfort.          |
+----------+-----+-----+----+----+-------------+----------------------+
| Chlorine | M   | 1   | MR | M  | Water       | Some infants and     |
| di       | RDL | 000 | DL | RD | additive    | young children who   |
| oxide^1^ |     |     |    | LG | used to     | drink water          |
| (ppb)    | =   |     | =  | =  | control     | containing chlorine  |
|          | .8  |     | 8  | 8  | microbes    | dioxide in excess of |
|          |     |     | 00 | 00 |             | the MRDL could       |
|          |     |     |    |    |             | experience nervous   |
|          |     |     |    |    |             | system effects.      |
|          |     |     |    |    |             | Similar effects may  |
|          |     |     |    |    |             | occur in fetuses of  |
|          |     |     |    |    |             | pregnant women who   |
|          |     |     |    |    |             | drink water          |
|          |     |     |    |    |             | containing chlorine  |
|          |     |     |    |    |             | dioxide in excess of |
|          |     |     |    |    |             | the MRDL. Some       |
|          |     |     |    |    |             | people may           |
|          |     |     |    |    |             | experience anemia.   |
+----------+-----+-----+----+----+-------------+----------------------+
| Chl      | 1   | \-  | 1  | 0  | By-product  | Some infants and     |
| orite^1^ |     |     |    | .8 | of drinking | young children who   |
|          |     |     |    |    | water       | drink water          |
| (ppm)    |     |     |    |    | c           | containing chlorite  |
|          |     |     |    |    | hlorination | in excess of the MCL |
|          |     |     |    |    |             | could experience     |
|          |     |     |    |    |             | nervous system       |
|          |     |     |    |    |             | effects. Similar     |
|          |     |     |    |    |             | effects may occur in |
|          |     |     |    |    |             | fetuses of pregnant  |
|          |     |     |    |    |             | women who drink      |
|          |     |     |    |    |             | water containing     |
|          |     |     |    |    |             | chlorite in excess   |
|          |     |     |    |    |             | of the MCL. Some     |
|          |     |     |    |    |             | people may           |
|          |     |     |    |    |             | experience anemia.   |
+----------+-----+-----+----+----+-------------+----------------------+
| Chromium | .1  | 1   | 1  | 1  | Discharge   | Some people who use  |
| (ppb)    |     | 000 | 00 | 00 | from steel  | water containing     |
|          |     |     |    |    | and pulp    | chromium well in     |
|          |     |     |    |    | mills;      | excess of the MCL    |
|          |     |     |    |    | Erosion of  | over many years      |
|          |     |     |    |    | natural     | could experience     |
|          |     |     |    |    | deposits    | allergic dermatitis. |
+----------+-----+-----+----+----+-------------+----------------------+
| Copper   | AL= | \-  | AL | 1  | Corrosion   | Copper is an         |
| (ppm)    | 1.3 |     | =1 | .3 | of          | essential nutrient,  |
|          |     |     | .3 |    | household   | but some people who  |
|          |     |     |    |    | plumbing    | drink water          |
|          |     |     |    |    | systems;    | containing copper in |
|          |     |     |    |    | Erosion of  | excess of the action |
|          |     |     |    |    | natural     | level over a         |
|          |     |     |    |    | deposits;   | relatively short     |
|          |     |     |    |    | Leaching    | amount of time could |
|          |     |     |    |    | from wood   | experience           |
|          |     |     |    |    | pr          | gastrointestinal     |
|          |     |     |    |    | eservatives | distress. Some       |
|          |     |     |    |    |             | people who drink     |
|          |     |     |    |    |             | water containing     |
|          |     |     |    |    |             | copper in excess of  |
|          |     |     |    |    |             | the action level     |
|          |     |     |    |    |             | over many years      |
|          |     |     |    |    |             | could suffer liver   |
|          |     |     |    |    |             | or kidney damage.    |
|          |     |     |    |    |             | People with Wilson's |
|          |     |     |    |    |             | Disease should       |
|          |     |     |    |    |             | consult their        |
|          |     |     |    |    |             | personal doctor.     |
+----------+-----+-----+----+----+-------------+----------------------+
| Cyanide  | .2  | 1   | 2  | 2  | Discharge   | Some people who      |
| (ppb)    |     | 000 | 00 | 00 | from        | drink water          |
|          |     |     |    |    | steel/metal | containing cyanide   |
|          |     |     |    |    | factories;  | well in excess of    |
|          |     |     |    |    | Discharge   | the MCL over many    |
|          |     |     |    |    | from        | years could          |
|          |     |     |    |    | plastic and | experience nerve     |
|          |     |     |    |    | fertilizer  | damage or problems   |
|          |     |     |    |    | factories   | with their thyroid.  |
+----------+-----+-----+----+----+-------------+----------------------+
| Fluoride | 4   | \-  | 4  | 4  | Erosion of  | Some people who      |
| (ppm)    |     |     |    |    | natural     | drink water          |
|          |     |     |    |    | deposits;   | containing fluoride  |
|          |     |     |    |    | Water       | in excess of the MCL |
|          |     |     |    |    | additive    | over many years      |
|          |     |     |    |    | which       | could get bone       |
|          |     |     |    |    | promotes    | disease, including   |
|          |     |     |    |    | strong      | pain and tenderness  |
|          |     |     |    |    | teeth;      | of the bones.        |
|          |     |     |    |    | Discharge   | Fluoride in drinking |
|          |     |     |    |    | from        | water at half the    |
|          |     |     |    |    | fertilizer  | MCL or more may      |
|          |     |     |    |    | and         | cause mottling of    |
|          |     |     |    |    | aluminum    | children's teeth,    |
|          |     |     |    |    | factories   | usually in children  |
|          |     |     |    |    |             | less than nine years |
|          |     |     |    |    |             | old. Mottling, also  |
|          |     |     |    |    |             | known as dental      |
|          |     |     |    |    |             | fluorosis, may       |
|          |     |     |    |    |             | include brown        |
|          |     |     |    |    |             | staining and/or      |
|          |     |     |    |    |             | pitting of the       |
|          |     |     |    |    |             | teeth, and occurs    |
|          |     |     |    |    |             | only in developing   |
|          |     |     |    |    |             | teeth before they    |
|          |     |     |    |    |             | erupt from the gums. |
+----------+-----+-----+----+----+-------------+----------------------+
| Lead     | A   | 1   | A  | 0  | Corrosion   | Infants and children |
| (ppb)    | L=. | 000 | L= |    | of          | who drink water      |
|          | 015 |     | 15 |    | household   | containing lead in   |
|          |     |     |    |    | plumbing    | excess of the action |
|          |     |     |    |    | systems;    | level could          |
|          |     |     |    |    | Erosion of  | experience delays in |
|          |     |     |    |    | natural     | their physical or    |
|          |     |     |    |    | deposits    | mental development.  |
|          |     |     |    |    |             | Children could show  |
|          |     |     |    |    |             | slight deficits in   |
|          |     |     |    |    |             | attention span and   |
|          |     |     |    |    |             | learning abilities.  |
|          |     |     |    |    |             | Adults who drink     |
|          |     |     |    |    |             | this water over many |
|          |     |     |    |    |             | years could develop  |
|          |     |     |    |    |             | kidney problems or   |
|          |     |     |    |    |             | high blood pressure. |
+----------+-----+-----+----+----+-------------+----------------------+
| Mercury  | .   | 1   | 2  | 2  | Erosion of  | Some people who      |
| \[ino    | 002 | 000 |    |    | natural     | drink water          |
| rganic\] |     |     |    |    | deposits;   | containing inorganic |
| (ppb)    |     |     |    |    | Discharge   | mercury well in      |
|          |     |     |    |    | from        | excess of the MCL    |
|          |     |     |    |    | refineries  | over many years      |
|          |     |     |    |    | and         | could experience     |
|          |     |     |    |    | factories;  | kidney damage.       |
|          |     |     |    |    | Runoff from |                      |
|          |     |     |    |    | landfills;  |                      |
|          |     |     |    |    | Runoff from |                      |
|          |     |     |    |    | cropland    |                      |
+----------+-----+-----+----+----+-------------+----------------------+
| Nitrate  | 10  | \-  | 10 | 10 | Runoff from | Infants below the    |
| (ppm)    |     |     |    |    | fertilizer  | age of six months    |
|          |     |     |    |    | use;        | who drink water      |
|          |     |     |    |    | Leaching    | containing nitrate   |
|          |     |     |    |    | from septic | in excess of the MCL |
|          |     |     |    |    | tanks,      | could become         |
|          |     |     |    |    | sewage;     | seriously ill and,   |
|          |     |     |    |    | Erosion of  | if untreated, may    |
|          |     |     |    |    | natural     | die. Symptoms        |
|          |     |     |    |    | deposits    | include shortness of |
|          |     |     |    |    |             | breath and blue baby |
|          |     |     |    |    |             | syndrome.            |
+----------+-----+-----+----+----+-------------+----------------------+
| Nitrite  | 1   | \-  | 1  | 1  | Runoff from | Infants below the    |
| (ppm)    |     |     |    |    | fertilizer  | age of six months    |
|          |     |     |    |    | use;        | who drink water      |
|          |     |     |    |    | Leaching    | containing nitrite   |
|          |     |     |    |    | from septic | in excess of the MCL |
|          |     |     |    |    | tanks,      | could become         |
|          |     |     |    |    | sewage;     | seriously ill and,   |
|          |     |     |    |    | Erosion of  | if untreated, may    |
|          |     |     |    |    | natural     | die. Symptoms        |
|          |     |     |    |    | deposits    | include shortness of |
|          |     |     |    |    |             | breath and blue baby |
|          |     |     |    |    |             | syndrome.            |
+----------+-----+-----+----+----+-------------+----------------------+
| Selenium | .05 | 1   | 50 | 50 | Discharge   | Selenium is an       |
| (ppb)    |     | 000 |    |    | from        | essential nutrient.  |
|          |     |     |    |    | petroleum   | However, some people |
|          |     |     |    |    | and metal   | who drink water      |
|          |     |     |    |    | refineries; | containing selenium  |
|          |     |     |    |    | Erosion of  | in excess of the MCL |
|          |     |     |    |    | natural     | over many years      |
|          |     |     |    |    | deposits;   | could experience     |
|          |     |     |    |    | Discharge   | hair or fingernail   |
|          |     |     |    |    | from mines  | losses, numbness in  |
|          |     |     |    |    |             | fingers or toes, or  |
|          |     |     |    |    |             | problems with their  |
|          |     |     |    |    |             | circulation.         |
+----------+-----+-----+----+----+-------------+----------------------+
| Thallium | .   | 1   | 2  | 0  | Leaching    | Some people who      |
| (ppb)    | 002 | 000 |    | .5 | from        | drink water          |
|          |     |     |    |    | ore         | containing thallium  |
|          |     |     |    |    | -processing | in excess of the MCL |
|          |     |     |    |    | sites;      | over many years      |
|          |     |     |    |    | Discharge   | could experience     |
|          |     |     |    |    | from        | hair loss, changes   |
|          |     |     |    |    | e           | in their blood, or   |
|          |     |     |    |    | lectronics, | problems with their  |
|          |     |     |    |    | glass, and  | kidneys, intestines, |
|          |     |     |    |    | drug        | or liver.            |
|          |     |     |    |    | factories   |                      |
+----------+-----+-----+----+----+-------------+----------------------+

+----------+-----+-----+----+----+-------------+----------------------+
| **S      |     |     |    |    |             |                      |
| ynthetic |     |     |    |    |             |                      |
| Organic  |     |     |    |    |             |                      |
| Cont     |     |     |    |    |             |                      |
| aminants |     |     |    |    |             |                      |
| i        |     |     |    |    |             |                      |
| ncluding |     |     |    |    |             |                      |
| Pe       |     |     |    |    |             |                      |
| sticides |     |     |    |    |             |                      |
| and      |     |     |    |    |             |                      |
| Herb     |     |     |    |    |             |                      |
| icides** |     |     |    |    |             |                      |
+==========+=====+=====+====+====+=============+======================+
| 2,4-D    | .07 | 1   | 70 | 70 | Runoff from | Some people who      |
| (ppb)    |     | 000 |    |    | herbicide   | drink water          |
|          |     |     |    |    | used on row | containing the weed  |
|          |     |     |    |    | crops       | killer 2,4-D well in |
|          |     |     |    |    |             | excess of the MCL    |
|          |     |     |    |    |             | over many years      |
|          |     |     |    |    |             | could experience     |
|          |     |     |    |    |             | problems with their  |
|          |     |     |    |    |             | kidneys, liver, or   |
|          |     |     |    |    |             | adrenal glands.      |
+----------+-----+-----+----+----+-------------+----------------------+
| 2,4,5-TP | .05 | 1   | 50 | 50 | Residue of  | Some people who      |
| \[       |     | 000 |    |    | banned      | drink water          |
| Silvex\] |     |     |    |    | herbicide   | containing silvex in |
|          |     |     |    |    |             | excess of the MCL    |
| (ppb)    |     |     |    |    |             | over many years      |
|          |     |     |    |    |             | could experience     |
|          |     |     |    |    |             | liver problems.      |
+----------+-----+-----+----+----+-------------+----------------------+
| Ac       | TT  | \-  | TT | 0  | Added to    | Some people who      |
| rylamide |     |     |    |    | water       | drink water          |
|          |     |     |    |    | during      | containing high      |
|          |     |     |    |    | sewage/     | levels of acrylamide |
|          |     |     |    |    | wastewater  | over a long period   |
|          |     |     |    |    | treatment   | of time could have   |
|          |     |     |    |    |             | problems with their  |
|          |     |     |    |    |             | nervous system or    |
|          |     |     |    |    |             | blood, and may have  |
|          |     |     |    |    |             | an increased risk of |
|          |     |     |    |    |             | getting cancer.      |
+----------+-----+-----+----+----+-------------+----------------------+
| Alachlor | .   | 1   | 2  | 0  | Runoff from | Some people who      |
| (ppb)    | 002 | 000 |    |    | herbicide   | drink water          |
|          |     |     |    |    | used on row | containing alachlor  |
|          |     |     |    |    | crops       | in excess of the MCL |
|          |     |     |    |    |             | over many years      |
|          |     |     |    |    |             | could have problems  |
|          |     |     |    |    |             | with their eyes,     |
|          |     |     |    |    |             | liver, kidneys, or   |
|          |     |     |    |    |             | spleen, or           |
|          |     |     |    |    |             | experience anemia,   |
|          |     |     |    |    |             | and may have an      |
|          |     |     |    |    |             | increased risk of    |
|          |     |     |    |    |             | getting cancer.      |
+----------+-----+-----+----+----+-------------+----------------------+
| Atrazine | .   | 1   | 3  | 3  | Runoff from | Some people who      |
| (ppb)    | 003 | 000 |    |    | herbicide   | drink water          |
|          |     |     |    |    | used on row | containing atrazine  |
|          |     |     |    |    | crops       | well in excess of    |
|          |     |     |    |    |             | the MCL over many    |
|          |     |     |    |    |             | years could          |
|          |     |     |    |    |             | experience problems  |
|          |     |     |    |    |             | with their           |
|          |     |     |    |    |             | cardiovascular       |
|          |     |     |    |    |             | system or            |
|          |     |     |    |    |             | reproductive         |
|          |     |     |    |    |             | difficulties.        |
+----------+-----+-----+----+----+-------------+----------------------+
| Benzo(   | .0  | 1,0 | 2  | 0  | Leaching    | Some people who      |
| a)pyrene | 002 | 00, | 00 |    | from        | drink water          |
| \[PAH\]  |     | 000 |    |    | linings of  | containing           |
|          |     |     |    |    | water       | benzo(a)pyrene in    |
| (nano    |     |     |    |    | storage     | excess of the MCL    |
| grams/l) |     |     |    |    | tanks and   | over many years may  |
|          |     |     |    |    | d           | experience           |
|          |     |     |    |    | istribution | reproductive         |
|          |     |     |    |    | lines       | difficulties and may |
|          |     |     |    |    |             | have an increased    |
|          |     |     |    |    |             | risk of getting      |
|          |     |     |    |    |             | cancer.              |
+----------+-----+-----+----+----+-------------+----------------------+
| Ca       | .04 | 1   | 40 | 40 | Leaching of | Some people who      |
| rbofuran |     | 000 |    |    | soil        | drink water          |
| (ppb)    |     |     |    |    | fumigant    | containing           |
|          |     |     |    |    | used on     | carbofuran in excess |
|          |     |     |    |    | rice and    | of the MCL over many |
|          |     |     |    |    | alfalfa     | years could          |
|          |     |     |    |    |             | experience problems  |
|          |     |     |    |    |             | with their blood, or |
|          |     |     |    |    |             | nervous or           |
|          |     |     |    |    |             | reproductive         |
|          |     |     |    |    |             | systems.             |
+----------+-----+-----+----+----+-------------+----------------------+
| C        | .   | 1   | 2  | 0  | Residue of  | Some people who      |
| hlordane | 002 | 000 |    |    | banned      | drink water          |
| (ppb)    |     |     |    |    | termiticide | containing chlordane |
|          |     |     |    |    |             | in excess of the MCL |
|          |     |     |    |    |             | over many years      |
|          |     |     |    |    |             | could experience     |
|          |     |     |    |    |             | problems with their  |
|          |     |     |    |    |             | liver or nervous     |
|          |     |     |    |    |             | system, and may have |
|          |     |     |    |    |             | an increased risk of |
|          |     |     |    |    |             | getting cancer.      |
+----------+-----+-----+----+----+-------------+----------------------+
| Dalapon  | .2  | 1   | 2  | 2  | Runoff from | Some people who      |
| (ppb)    |     | 000 | 00 | 00 | herbicide   | drink water          |
|          |     |     |    |    | used on     | containing dalapon   |
|          |     |     |    |    | rights of   | well in excess of    |
|          |     |     |    |    | way         | the MCL over many    |
|          |     |     |    |    |             | years could          |
|          |     |     |    |    |             | experience minor     |
|          |     |     |    |    |             | kidney changes.      |
+----------+-----+-----+----+----+-------------+----------------------+
| Di(2-eth | .4  | 1   | 4  | 4  | Discharge   | Some people who      |
| ylhexyl) |     | 000 | 00 | 00 | from        | drink water          |
| adipate  |     |     |    |    | chemical    | containing di        |
|          |     |     |    |    | factories   | (2-ethylhexyl)       |
| (ppb)    |     |     |    |    |             | adipate well in      |
|          |     |     |    |    |             | excess of the MCL    |
|          |     |     |    |    |             | over many years      |
|          |     |     |    |    |             | could experience     |
|          |     |     |    |    |             | general toxic        |
|          |     |     |    |    |             | effects or           |
|          |     |     |    |    |             | reproductive         |
|          |     |     |    |    |             | difficulties.        |
+----------+-----+-----+----+----+-------------+----------------------+
| Di(2-eth | .   | 1   | 6  | 0  | Discharge   | Some people who      |
| ylhexyl) | 006 | 000 |    |    | from rubber | drink water          |
| p        |     |     |    |    | and         | containing di        |
| hthalate |     |     |    |    | chemical    | (2-ethylhexyl)       |
|          |     |     |    |    | factories   | phthalate in excess  |
| (ppb)    |     |     |    |    |             | of the MCL over many |
|          |     |     |    |    |             | years may have       |
|          |     |     |    |    |             | problems with their  |
|          |     |     |    |    |             | liver, or experience |
|          |     |     |    |    |             | reproductive         |
|          |     |     |    |    |             | difficulties, and    |
|          |     |     |    |    |             | may have an          |
|          |     |     |    |    |             | increased risk of    |
|          |     |     |    |    |             | getting cancer.      |
+----------+-----+-----+----+----+-------------+----------------------+
| Dibro    | .0  | 1,0 | 2  | 0  | Runo        | Some people who      |
| mochloro | 002 | 00, | 00 |    | ff/leaching | drink water          |
| -propane |     | 000 |    |    | from soil   | containing DBCP in   |
|          |     |     |    |    | fumigant    | excess of the MCL    |
| (ppt)    |     |     |    |    | used on     | over many years      |
|          |     |     |    |    | soybeans,   | could experience     |
|          |     |     |    |    | cotton,     | reproductive         |
|          |     |     |    |    | pineapples, | problems and may     |
|          |     |     |    |    | and         | have an increased    |
|          |     |     |    |    | orchards    | risk of getting      |
|          |     |     |    |    |             | cancer.              |
+----------+-----+-----+----+----+-------------+----------------------+
| Dinoseb  | .   | 1   | 7  | 7  | Runoff from | Some people who      |
| (ppb)    | 007 | 000 |    |    | herbicide   | drink water          |
|          |     |     |    |    | used on     | containing dinoseb   |
|          |     |     |    |    | soybeans    | well in excess of    |
|          |     |     |    |    | and         | the MCL over many    |
|          |     |     |    |    | vegetables  | years could          |
|          |     |     |    |    |             | experience           |
|          |     |     |    |    |             | reproductive         |
|          |     |     |    |    |             | difficulties.        |
+----------+-----+-----+----+----+-------------+----------------------+
| Diquat   | .02 | 1   | 20 | 20 | Runoff from | Some people who      |
| (ppb)    |     | 000 |    |    | herbicide   | drink water          |
|          |     |     |    |    | use         | containing diquat in |
|          |     |     |    |    |             | excess of the MCL    |
|          |     |     |    |    |             | over many years      |
|          |     |     |    |    |             | could get cataracts. |
+----------+-----+-----+----+----+-------------+----------------------+
| Dioxin   | .00 | 1   | 30 | 0  | Emissions   | Some people who      |
|          | 000 | ,00 |    |    | from waste  | drink water          |
| \[2,3,7, | 003 | 0,0 |    |    | i           | containing dioxin in |
| 8-TCDD\] |     | 00, |    |    | ncineration | excess of the MCL    |
|          |     | 000 |    |    | and other   | over many years      |
| (ppq)    |     |     |    |    | combustion; | could experience     |
|          |     |     |    |    | Discharge   | reproductive         |
|          |     |     |    |    | from        | difficulties and may |
|          |     |     |    |    | chemical    | have an increased    |
|          |     |     |    |    | factories   | risk of getting      |
|          |     |     |    |    |             | cancer.              |
+----------+-----+-----+----+----+-------------+----------------------+
| E        | .1  | 1   | 1  | 1  | Runoff from | Some people who      |
| ndothall |     | 000 | 00 | 00 | herbicide   | drink water          |
| (ppb)    |     |     |    |    | use         | containing endothall |
|          |     |     |    |    |             | in excess of the MCL |
|          |     |     |    |    |             | over many years      |
|          |     |     |    |    |             | could experience     |
|          |     |     |    |    |             | problems with their  |
|          |     |     |    |    |             | stomach or           |
|          |     |     |    |    |             | intestines.          |
+----------+-----+-----+----+----+-------------+----------------------+
| Endrin   | .   | 1   | 2  | 2  | Residue of  | Some people who      |
| (ppb)    | 002 | 000 |    |    | banned      | drink water          |
|          |     |     |    |    | insecticide | containing endrin in |
|          |     |     |    |    |             | excess of the MCL    |
|          |     |     |    |    |             | over many years      |
|          |     |     |    |    |             | could experience     |
|          |     |     |    |    |             | liver problems.      |
+----------+-----+-----+----+----+-------------+----------------------+
| Epichlo  | TT  | \-  | TT | 0  | Discharge   | Some people who      |
| rohydrin |     |     |    |    | from        | drink water          |
|          |     |     |    |    | industrial  | containing high      |
|          |     |     |    |    | chemical    | levels of            |
|          |     |     |    |    | factories;  | epichlorohydrin over |
|          |     |     |    |    | An impurity | a long period of     |
|          |     |     |    |    | of some     | time could           |
|          |     |     |    |    | water       | experience stomach   |
|          |     |     |    |    | treatment   | problems, and may    |
|          |     |     |    |    | chemicals   | have an increased    |
|          |     |     |    |    |             | risk of getting      |
|          |     |     |    |    |             | cancer.              |
+----------+-----+-----+----+----+-------------+----------------------+
| Ethylene | .00 | 1,0 | 50 | 0  | Discharge   | Some people who      |
| d        | 005 | 00, |    |    | from        | drink water          |
| ibromide |     | 000 |    |    | petroleum   | containing ethylene  |
| (ppt)    |     |     |    |    | refineries  | dibromide in excess  |
|          |     |     |    |    |             | of the MCL over many |
|          |     |     |    |    |             | years could          |
|          |     |     |    |    |             | experience problems  |
|          |     |     |    |    |             | with their liver,    |
|          |     |     |    |    |             | stomach,             |
|          |     |     |    |    |             | reproductive system, |
|          |     |     |    |    |             | or kidneys, and may  |
|          |     |     |    |    |             | have an increased    |
|          |     |     |    |    |             | risk of getting      |
|          |     |     |    |    |             | cancer.              |
+----------+-----+-----+----+----+-------------+----------------------+
| Gl       | .7  | 1   | 7  | 7  | Runoff from | Some people who      |
| yphosate |     | 000 | 00 | 00 | herbicide   | drink water          |
| (ppb)    |     |     |    |    | use         | containing           |
|          |     |     |    |    |             | glyphosate in excess |
|          |     |     |    |    |             | of the MCL over many |
|          |     |     |    |    |             | years could          |
|          |     |     |    |    |             | experience problems  |
|          |     |     |    |    |             | with their kidneys   |
|          |     |     |    |    |             | or reproductive      |
|          |     |     |    |    |             | difficulties.        |
+----------+-----+-----+----+----+-------------+----------------------+
| He       | .0  | 1,0 | 4  | 0  | Residue of  | Some people who      |
| ptachlor | 004 | 00, | 00 |    | banned      | drink water          |
| (ppt)    |     | 000 |    |    | pesticide   | containing           |
|          |     |     |    |    |             | heptachlor in excess |
|          |     |     |    |    |             | of the MCL over many |
|          |     |     |    |    |             | years could          |
|          |     |     |    |    |             | experience liver     |
|          |     |     |    |    |             | damage and may have  |
|          |     |     |    |    |             | an increased risk of |
|          |     |     |    |    |             | getting cancer.      |
+----------+-----+-----+----+----+-------------+----------------------+
| He       | .0  | 1,0 | 2  | 0  | Breakdown   | Some people who      |
| ptachlor | 002 | 00, | 00 |    | of          | drink water          |
| epoxide  |     | 000 |    |    | heptachlor  | containing           |
| (ppt)    |     |     |    |    |             | heptachlor epoxide   |
|          |     |     |    |    |             | in excess of the MCL |
|          |     |     |    |    |             | over many years      |
|          |     |     |    |    |             | could experience     |
|          |     |     |    |    |             | liver damage, and    |
|          |     |     |    |    |             | may have an          |
|          |     |     |    |    |             | increased risk of    |
|          |     |     |    |    |             | getting cancer.      |
+----------+-----+-----+----+----+-------------+----------------------+
| H        | .   | 1   | 1  | 0  | Discharge   | Some people who      |
| exachlor | 001 | 000 |    |    | from metal  | drink water          |
| obenzene |     |     |    |    | refineries  | containing           |
| (ppb)    |     |     |    |    | and         | hexachlorobenzene in |
|          |     |     |    |    | a           | excess of the MCL    |
|          |     |     |    |    | gricultural | over many years      |
|          |     |     |    |    | chemical    | could experience     |
|          |     |     |    |    | factories   | problems with their  |
|          |     |     |    |    |             | liver or kidneys, or |
|          |     |     |    |    |             | adverse reproductive |
|          |     |     |    |    |             | effects, and may     |
|          |     |     |    |    |             | have an increased    |
|          |     |     |    |    |             | risk of getting      |
|          |     |     |    |    |             | cancer.              |
+----------+-----+-----+----+----+-------------+----------------------+
| Hex      | .05 | 1   | 50 | 50 | Discharge   | Some people who      |
| achloro- |     | 000 |    |    | from        | drink water          |
|          |     |     |    |    | chemical    | containing           |
| cyclope  |     |     |    |    | factories   | hexac                |
| ntadiene |     |     |    |    |             | hlorocyclopentadiene |
| (ppb)    |     |     |    |    |             | well in excess of    |
|          |     |     |    |    |             | the MCL over many    |
|          |     |     |    |    |             | years could          |
|          |     |     |    |    |             | experience problems  |
|          |     |     |    |    |             | with their kidneys   |
|          |     |     |    |    |             | or stomach.          |
+----------+-----+-----+----+----+-------------+----------------------+
| Lindane  | .0  | 1,0 | 2  | 2  | Runo        | Some people who      |
| (ppt)    | 002 | 00, | 00 | 00 | ff/leaching | drink water          |
|          |     | 000 |    |    | from        | containing lindane   |
|          |     |     |    |    | insecticide | in excess of the MCL |
|          |     |     |    |    | used on     | over many years      |
|          |     |     |    |    | cattle,     | could experience     |
|          |     |     |    |    | lumber,     | problems with their  |
|          |     |     |    |    | gardens     | kidneys or liver.    |
+----------+-----+-----+----+----+-------------+----------------------+
| Meth     | .04 | 1   | 40 | 40 | Runo        | Some people who      |
| oxychlor |     | 000 |    |    | ff/leaching | drink water          |
| (ppb)    |     |     |    |    | from        | containing           |
|          |     |     |    |    | insecticide | methoxychlor in      |
|          |     |     |    |    | used on     | excess of the MCL    |
|          |     |     |    |    | fruits,     | over many years      |
|          |     |     |    |    | vegetables, | could experience     |
|          |     |     |    |    | alfalfa,    | reproductive         |
|          |     |     |    |    | livestock   | difficulties.        |
+----------+-----+-----+----+----+-------------+----------------------+
| Oxamyl   | .2  | 1   | 2  | 2  | Runo        | Some people who      |
| \[       |     | 000 | 00 | 00 | ff/leaching | drink water          |
| Vydate\] |     |     |    |    | from        | containing oxamyl in |
| (ppb)    |     |     |    |    | insecticide | excess of the MCL    |
|          |     |     |    |    | used on     | over many years      |
|          |     |     |    |    | apples,     | could experience     |
|          |     |     |    |    | potatoes    | slight nervous       |
|          |     |     |    |    | and         | system effects.      |
|          |     |     |    |    | tomatoes    |                      |
+----------+-----+-----+----+----+-------------+----------------------+
| PCBs     | .0  | 1,0 | 5  | 0  | Runoff from | Some people who      |
| \        | 005 | 00, | 00 |    | landfills;  | drink water          |
| [Polychl |     | 000 |    |    | Discharge   | containing PCBs in   |
| orinated |     |     |    |    | of waste    | excess of the MCL    |
| bip      |     |     |    |    | chemicals   | over many years      |
| henyls\] |     |     |    |    |             | could experience     |
|          |     |     |    |    |             | changes in their     |
| (ppt)    |     |     |    |    |             | skin, problems with  |
|          |     |     |    |    |             | their thymus gland,  |
|          |     |     |    |    |             | immune deficiencies, |
|          |     |     |    |    |             | or reproductive or   |
|          |     |     |    |    |             | nervous system       |
|          |     |     |    |    |             | difficulties, and    |
|          |     |     |    |    |             | may have an          |
|          |     |     |    |    |             | increased risk of    |
|          |     |     |    |    |             | getting cancer.      |
+----------+-----+-----+----+----+-------------+----------------------+
| P        | .   | 1   | 1  | 0  | Discharge   | Some people who      |
| entachlo | 001 | 000 |    |    | from wood   | drink water          |
| rophenol |     |     |    |    | preserving  | containing           |
| (ppb)    |     |     |    |    | factories   | pentachlorophenol in |
|          |     |     |    |    |             | excess of the MCL    |
|          |     |     |    |    |             | over many years      |
|          |     |     |    |    |             | could experience     |
|          |     |     |    |    |             | problems with their  |
|          |     |     |    |    |             | liver or kidneys,    |
|          |     |     |    |    |             | and may have an      |
|          |     |     |    |    |             | increased risk of    |
|          |     |     |    |    |             | getting cancer.      |
+----------+-----+-----+----+----+-------------+----------------------+
| Picloram | .5  | 1   | 5  | 5  | Herbicide   | Some people who      |
| (ppb)    |     | 000 | 00 | 00 | runoff      | drink water          |
|          |     |     |    |    |             | containing picloram  |
|          |     |     |    |    |             | in excess of the MCL |
|          |     |     |    |    |             | over many years      |
|          |     |     |    |    |             | could experience     |
|          |     |     |    |    |             | problems with their  |
|          |     |     |    |    |             | liver.               |
+----------+-----+-----+----+----+-------------+----------------------+
| Simazine | .   | 1   | 4  | 4  | Herbicide   | Some people who      |
| (ppb)    | 004 | 000 |    |    | runoff      | drink water          |
|          |     |     |    |    |             | containing simazine  |
|          |     |     |    |    |             | in excess of the MCL |
|          |     |     |    |    |             | over many years      |
|          |     |     |    |    |             | could experience     |
|          |     |     |    |    |             | problems with their  |
|          |     |     |    |    |             | blood.               |
+----------+-----+-----+----+----+-------------+----------------------+
| T        | .   | 1   | 3  | 0  | Runo        | Some people who      |
| oxaphene | 003 | 000 |    |    | ff/leaching | drink water          |
| (ppb)    |     |     |    |    | from        | containing toxaphene |
|          |     |     |    |    | insecticide | in excess of the MCL |
|          |     |     |    |    | used on     | over many years      |
|          |     |     |    |    | cotton and  | could have problems  |
|          |     |     |    |    | cattle      | with their kidneys,  |
|          |     |     |    |    |             | liver, or thyroid,   |
|          |     |     |    |    |             | and may have an      |
|          |     |     |    |    |             | increased risk of    |
|          |     |     |    |    |             | getting cancer.      |
+----------+-----+-----+----+----+-------------+----------------------+
| **       |     |     |    |    |             |                      |
| Volatile |     |     |    |    |             |                      |
| Organic  |     |     |    |    |             |                      |
| Contam   |     |     |    |    |             |                      |
| inants** |     |     |    |    |             |                      |
+----------+-----+-----+----+----+-------------+----------------------+
| Benzene  | .   | 1   | 5  | 0  | Discharge   | Some people who      |
| (ppb)    | 005 | 000 |    |    | from        | drink water          |
|          |     |     |    |    | factories;  | containing benzene   |
|          |     |     |    |    | Leaching    | in excess of the MCL |
|          |     |     |    |    | from gas    | over many years      |
|          |     |     |    |    | storage     | could experience     |
|          |     |     |    |    | tanks and   | anemia or a decrease |
|          |     |     |    |    | landfills   | in blood platelets,  |
|          |     |     |    |    |             | and may have an      |
|          |     |     |    |    |             | increased risk of    |
|          |     |     |    |    |             | getting cancer.      |
+----------+-----+-----+----+----+-------------+----------------------+
| Carbon   | .   | 1   | 5  | 0  | Discharge   | Some people who      |
| tetra    | 005 | 000 |    |    | from        | drink water          |
| chloride |     |     |    |    | chemical    | containing carbon    |
| (ppb)    |     |     |    |    | plants and  | tetrachloride in     |
|          |     |     |    |    | other       | excess of the MCL    |
|          |     |     |    |    | industrial  | over many years      |
|          |     |     |    |    | activities  | could experience     |
|          |     |     |    |    |             | problems with their  |
|          |     |     |    |    |             | liver and may have   |
|          |     |     |    |    |             | an increased risk of |
|          |     |     |    |    |             | getting cancer.      |
+----------+-----+-----+----+----+-------------+----------------------+
| Chlor    | .1  | 1   | 1  | 1  | Discharge   | Some people who      |
| obenzene |     | 000 | 00 | 00 | from        | drink water          |
| (ppb)    |     |     |    |    | chemical    | containing           |
|          |     |     |    |    | and         | chlorobenzene in     |
|          |     |     |    |    | a           | excess of the MCL    |
|          |     |     |    |    | gricultural | over many years      |
|          |     |     |    |    | chemical    | could experience     |
|          |     |     |    |    | factories   | problems with their  |
|          |     |     |    |    |             | liver or kidneys.    |
+----------+-----+-----+----+----+-------------+----------------------+
| o        | .6  | 1   | 6  | 6  | Discharge   | Some people who      |
| -Dichlor |     | 000 | 00 | 00 | from        | drink water          |
| obenzene |     |     |    |    | industrial  | containing           |
| (ppb)    |     |     |    |    | chemical    | o-dichlorobenzene    |
|          |     |     |    |    | factories   | well in excess of    |
|          |     |     |    |    |             | the MCL over many    |
|          |     |     |    |    |             | years could          |
|          |     |     |    |    |             | experience problems  |
|          |     |     |    |    |             | with their liver,    |
|          |     |     |    |    |             | kidneys, or          |
|          |     |     |    |    |             | circulatory systems. |
+----------+-----+-----+----+----+-------------+----------------------+
| p        | .   | 1   | 75 | 75 | Discharge   | Some people who      |
| -Dichlor | 075 | 000 |    |    | from        | drink water          |
| obenzene |     |     |    |    | industrial  | containing           |
| (ppb)    |     |     |    |    | chemical    | p-dichlorobenzene in |
|          |     |     |    |    | factories   | excess of the MCL    |
|          |     |     |    |    |             | over many years      |
|          |     |     |    |    |             | could experience     |
|          |     |     |    |    |             | anemia, damage to    |
|          |     |     |    |    |             | their liver,         |
|          |     |     |    |    |             | kidneys, or spleen,  |
|          |     |     |    |    |             | or changes in their  |
|          |     |     |    |    |             | blood.               |
+----------+-----+-----+----+----+-------------+----------------------+
| 1,       | .   | 1   | 5  | 0  | Discharge   | Some people who      |
| 2-Dichlo | 005 | 000 |    |    | from        | drink water          |
| roethane |     |     |    |    | industrial  | containing           |
| (ppb)    |     |     |    |    | chemical    | 1,2-dichloroethane   |
|          |     |     |    |    | factories   | in excess of the MCL |
|          |     |     |    |    |             | over many years may  |
|          |     |     |    |    |             | have an increased    |
|          |     |     |    |    |             | risk of getting      |
|          |     |     |    |    |             | cancer.              |
+----------+-----+-----+----+----+-------------+----------------------+
| 1,1-     | .   | 1   | 7  | 7  | Discharge   | Some people who      |
| Dichloro | 007 | 000 |    |    | from        | drink water          |
| ethylene |     |     |    |    | industrial  | containing           |
| (ppb)    |     |     |    |    | chemical    | 1,1-dichloroethylene |
|          |     |     |    |    | factories   | in excess of the MCL |
|          |     |     |    |    |             | over many years      |
|          |     |     |    |    |             | could experience     |
|          |     |     |    |    |             | problems with their  |
|          |     |     |    |    |             | liver.               |
+----------+-----+-----+----+----+-------------+----------------------+
| cis-1,2- | .07 | 1   | 70 | 70 | Discharge   | Some people who      |
| Dichloro |     | 000 |    |    | from        | drink water          |
| ethylene |     |     |    |    | industrial  | containing           |
| (ppb)    |     |     |    |    | chemical    | cis-                 |
|          |     |     |    |    | factories   | 1,2-dichloroethylene |
|          |     |     |    |    |             | in excess of the MCL |
|          |     |     |    |    |             | over many years      |
|          |     |     |    |    |             | could experience     |
|          |     |     |    |    |             | problems with their  |
|          |     |     |    |    |             | liver.               |
+----------+-----+-----+----+----+-------------+----------------------+
| tr       | .1  | 1   | 1  | 1  | Discharge   | Some people who      |
| ans-1,2- |     | 000 | 00 | 00 | from        | drink water          |
| Dichloro |     |     |    |    | industrial  | containing           |
| ethylene |     |     |    |    | chemical    | trans-               |
| (ppb)    |     |     |    |    | factories   | 1,2-dichloroethylene |
|          |     |     |    |    |             | well in excess of    |
|          |     |     |    |    |             | the MCL over many    |
|          |     |     |    |    |             | years could          |
|          |     |     |    |    |             | experience problems  |
|          |     |     |    |    |             | with their liver.    |
+----------+-----+-----+----+----+-------------+----------------------+
| Dichlor  | .   | 1   | 5  | 0  | Discharge   | Some people who      |
| omethane | 005 | 000 |    |    | from        | drink water          |
| (ppb)    |     |     |    |    | pha         | containing           |
|          |     |     |    |    | rmaceutical | dichloromethane in   |
|          |     |     |    |    | and         | excess of the MCL    |
|          |     |     |    |    | chemical    | over many years      |
|          |     |     |    |    | factories   | could have liver     |
|          |     |     |    |    |             | problems and may     |
|          |     |     |    |    |             | have an increased    |
|          |     |     |    |    |             | risk of getting      |
|          |     |     |    |    |             | cancer.              |
+----------+-----+-----+----+----+-------------+----------------------+
| 1,2      | .   | 1   | 5  | 0  | Discharge   | Some people who      |
| -Dichlor | 005 | 000 |    |    | from        | drink water          |
| opropane |     |     |    |    | industrial  | containing           |
| (ppb)    |     |     |    |    | chemical    | 1,2-dichloropropane  |
|          |     |     |    |    | factories   | in excess of the MCL |
|          |     |     |    |    |             | over many years may  |
|          |     |     |    |    |             | have an increased    |
|          |     |     |    |    |             | risk of getting      |
|          |     |     |    |    |             | cancer.              |
+----------+-----+-----+----+----+-------------+----------------------+
| Ethy     | .7  | 1   | 7  | 7  | Discharge   | Some people who      |
| lbenzene |     | 000 | 00 | 00 | from        | drink water          |
| (ppb)    |     |     |    |    | petroleum   | containing           |
|          |     |     |    |    | refineries  | ethylbenzene well in |
|          |     |     |    |    |             | excess of the MCL    |
|          |     |     |    |    |             | over many years      |
|          |     |     |    |    |             | could experience     |
|          |     |     |    |    |             | problems with their  |
|          |     |     |    |    |             | liver or kidneys.    |
+----------+-----+-----+----+----+-------------+----------------------+
| Ha       | .   | 1   | 60 | n  | By-product  | Some people who      |
| loacetic | 060 | 000 |    | /a | of drinking | drink water          |
| Acids    |     |     |    |    | water       | containing           |
| (HAA)    |     |     |    |    | d           | haloacetic acids in  |
|          |     |     |    |    | isinfection | excess of the MCL    |
| (ppb)    |     |     |    |    |             | over many years may  |
|          |     |     |    |    |             | have an increased    |
|          |     |     |    |    |             | risk of getting      |
|          |     |     |    |    |             | cancer.              |
+----------+-----+-----+----+----+-------------+----------------------+
| Styrene  | .1  | 1   | 1  | 1  | Discharge   | Some people who      |
| (ppb)    |     | 000 | 00 | 00 | from rubber | drink water          |
|          |     |     |    |    | and plastic | containing styrene   |
|          |     |     |    |    | factories;  | well in excess of    |
|          |     |     |    |    | Leaching    | the MCL over many    |
|          |     |     |    |    | from        | years could have     |
|          |     |     |    |    | landfills   | problems with their  |
|          |     |     |    |    |             | liver, kidneys, or   |
|          |     |     |    |    |             | circulatory system.  |
+----------+-----+-----+----+----+-------------+----------------------+
| Tet      | .   | 1   | 5  | 0  | Discharge   | Some people who      |
| rachloro | 005 | 000 |    |    | from        | drink water          |
| ethylene |     |     |    |    | factories   | containing           |
| (ppb)    |     |     |    |    | and dry     | tetrachloroethylene  |
|          |     |     |    |    | cleaners    | in excess of the MCL |
|          |     |     |    |    |             | over many years      |
|          |     |     |    |    |             | could have problems  |
|          |     |     |    |    |             | with their liver,    |
|          |     |     |    |    |             | and may have an      |
|          |     |     |    |    |             | increased risk of    |
|          |     |     |    |    |             | getting cancer.      |
+----------+-----+-----+----+----+-------------+----------------------+
| 1,2,4-   | .07 | 1   | 70 | 70 | Discharge   | Some people who      |
| Trichlor |     | 000 |    |    | from        | drink water          |
| obenzene |     |     |    |    | textil      | containing           |
| (ppb)    |     |     |    |    | e-finishing | 1,                   |
|          |     |     |    |    | factories   | 2,4-trichlorobenzene |
|          |     |     |    |    |             | well in excess of    |
|          |     |     |    |    |             | the MCL over many    |
|          |     |     |    |    |             | years could          |
|          |     |     |    |    |             | experience changes   |
|          |     |     |    |    |             | in their adrenal     |
|          |     |     |    |    |             | glands.              |
+----------+-----+-----+----+----+-------------+----------------------+
| 1,1,1    | .2  | 1   | 2  | 2  | Discharge   | Some people who      |
| -Trichlo |     | 000 | 00 | 00 | from metal  | drink water          |
| roethane |     |     |    |    | degreasing  | containing           |
| (ppb)    |     |     |    |    | sites and   | 1                    |
|          |     |     |    |    | other       | ,1,1-trichloroethane |
|          |     |     |    |    | factories   | in excess of the MCL |
|          |     |     |    |    |             | over many years      |
|          |     |     |    |    |             | could experience     |
|          |     |     |    |    |             | problems with their  |
|          |     |     |    |    |             | liver, nervous       |
|          |     |     |    |    |             | system, or           |
|          |     |     |    |    |             | circulatory system.  |
+----------+-----+-----+----+----+-------------+----------------------+
| 1,1,2    | .   | 1   | 5  | 3  | Discharge   | Some people who      |
| -Trichlo | 005 | 000 |    |    | from        | drink water          |
| roethane |     |     |    |    | industrial  | containing           |
| (ppb)    |     |     |    |    | chemical    | 1                    |
|          |     |     |    |    | factories   | ,1,2-trichloroethane |
|          |     |     |    |    |             | well in excess of    |
|          |     |     |    |    |             | the MCL over many    |
|          |     |     |    |    |             | years could have     |
|          |     |     |    |    |             | problems with their  |
|          |     |     |    |    |             | liver, kidneys, or   |
|          |     |     |    |    |             | immune systems.      |
+----------+-----+-----+----+----+-------------+----------------------+
| T        | .   | 1   | 5  | 0  | Discharge   | Some people who      |
| richloro | 005 | 000 |    |    | from metal  | drink water          |
| ethylene |     |     |    |    | degreasing  | containing           |
| (ppb)    |     |     |    |    | sites and   | trichloroethylene in |
|          |     |     |    |    | other       | excess of the MCL    |
|          |     |     |    |    | factories   | over many years      |
|          |     |     |    |    |             | could experience     |
|          |     |     |    |    |             | problems with their  |
|          |     |     |    |    |             | liver and may have   |
|          |     |     |    |    |             | an increased risk of |
|          |     |     |    |    |             | getting cancer.      |
+----------+-----+-----+----+----+-------------+----------------------+
| TTHMs    | 0.1 | 1   | 10 | n  | By-product  | Some people who      |
|          | 0/. | 000 | 0/ | /a | of drinking | drink water          |
| \[Total  | 080 |     | 80 |    | water       | containing           |
| t        |     |     |    |    | c           | trihalomethanes in   |
| rihalome |     |     |    |    | hlorination | excess of the MCL    |
| thanes\] |     |     |    |    |             | over many years may  |
| (ppb)    |     |     |    |    |             | experience problems  |
|          |     |     |    |    |             | with their liver,    |
|          |     |     |    |    |             | kidneys, or central  |
|          |     |     |    |    |             | nervous systems, and |
|          |     |     |    |    |             | may have an          |
|          |     |     |    |    |             | increased risk of    |
|          |     |     |    |    |             | getting cancer.      |
+----------+-----+-----+----+----+-------------+----------------------+
| Toluene  | 1   | \-  | 1  | 1  | Discharge   | Some people who      |
| (ppm)    |     |     |    |    | from        | drink water          |
|          |     |     |    |    | petroleum   | containing toluene   |
|          |     |     |    |    | factories   | well in excess of    |
|          |     |     |    |    |             | the MCL over many    |
|          |     |     |    |    |             | years could have     |
|          |     |     |    |    |             | problems with their  |
|          |     |     |    |    |             | nervous system,      |
|          |     |     |    |    |             | kidneys, or liver.   |
+----------+-----+-----+----+----+-------------+----------------------+
| Vinyl    | .   | 1   | 2  | 0  | Leaching    | Some people who      |
| Chloride | 002 | 000 |    |    | from PVC    | drink water          |
| (ppb)    |     |     |    |    | piping;     | containing vinyl     |
|          |     |     |    |    | Discharge   | chloride in excess   |
|          |     |     |    |    | from        | of the MCL over many |
|          |     |     |    |    | plastics    | years may have an    |
|          |     |     |    |    | factories   | increased risk of    |
|          |     |     |    |    |             | getting cancer.      |
+----------+-----+-----+----+----+-------------+----------------------+
| Xylenes  | 10  | \-  | 10 | 10 | Discharge   | Some people who      |
| (ppm)    |     |     |    |    | from        | drink water          |
|          |     |     |    |    | petroleum   | containing xylenes   |
|          |     |     |    |    | factories;  | in excess of the MCL |
|          |     |     |    |    | Discharge   | over many years      |
|          |     |     |    |    | from        | could experience     |
|          |     |     |    |    | chemical    | damage to their      |
|          |     |     |    |    | factories   | nervous system.      |
+----------+-----+-----+----+----+-------------+----------------------+

[^1]:
    > ^?^The PN Rule published in the *Federal Register* on May 4, 2000
    > updated Appendix A of the CCR Rule. Information for this
    > contaminant was incorrectly placed in the volatile organic
    > contaminants section of Appendix A instead of the inorganic
    > contaminants section. EPA will publish a technical correction to
    > the rule to correct this error.

[^2]:
    > ^?^The PN Rule published in the *Federal Register* on May 4, 2000
    > updated Appendix A of the CCR Rule. Information for this
    > contaminant was incorrectly placed in the volatile organic
    > contaminants section of Appendix A instead of the inorganic
    > contaminants section. EPA will publish a technical correction to
    > the rule to correct this error.