+-----------------------------------------------------------------------+
| > **PRIMACY REVISION**                                                |
| >                                                                     |
| > **CROSSWALK**                                                       |
+-----------------------------------------------------------------------+

**[Primacy Revision Crosswalk for the LCRMR]{.smallcaps}**

+-------------------------------------+----------+-----------+--------+
| **Federal Requirement**             | *        | **State   | **Dif  |
|                                     | *Federal | Citation  | ferent |
|                                     | Ci       | (document | from   |
|                                     | tation** | title,    | fed.   |
|                                     |          | page      | requir |
|                                     |          | number,   | ement? |
|                                     |          | se        | If     |
|                                     |          | ction/par | yes,   |
|                                     |          | agraph)** | e      |
|                                     |          |           | xplain |
|                                     |          |           | on     |
|                                     |          |           | se     |
|                                     |          |           | parate |
|                                     |          |           | s      |
|                                     |          |           | heet** |
+=====================================+==========+===========+========+
| ***States must adopt those          |          |           |        |
| Provisions marked with a "" to      |          |           |        |
| retain/obtain primacy.***           |          |           |        |
+-------------------------------------+----------+-----------+--------+
| **[Subpart E---Special Regulations, |          |           |        |
| Including Monitoring Regulations    |          |           |        |
| and Prohibition on Lead             |          |           |        |
| Use]{.smallcaps}**                  |          |           |        |
+-------------------------------------+----------+-----------+--------+
| **[§141.43 Prohibition on Use of    |          |           |        |
| Lead Pipes, Solder, and             |          |           |        |
| Flux]{.smallcaps}**                 |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Deletes requirement for each PWS to | §141.    |           |        |
| notify persons who may be affected  | 43(a)(2) |           |        |
| by lead contamination in their      | (i)-(ii) |           |        |
| drinking water. EPA has not added   |          |           |        |
| any new requirements to this        |          |           |        |
| paragraph.                          |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Deletes requirement which specified | §141.    |           |        |
| the effective date for public       | 43(b)(2) |           |        |
| notice requirements. EPA has not    |          |           |        |
| added any new requirements to this  |          |           |        |
| paragraph.                          |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Adds a third definition of lead     | §141.    |           |        |
| free, which is: Plumbing, fittings  | 43(d)(3) |           |        |
| and fixtures intended by the        |          |           |        |
| manufacturer to dispense water for  |          |           |        |
| human ingestion: those that comply  |          |           |        |
| with standards established in       |          |           |        |
| accordance with 42 U.S.C.           |          |           |        |
| 300g-6(e).                          |          |           |        |
+-------------------------------------+----------+-----------+--------+
| **[Subpart I---Control of Lead and  |          |           |        |
| Copper]{.smallcaps}**               |          |           |        |
+-------------------------------------+----------+-----------+--------+
| **[§141.80 General                  |          |           |        |
| Requirements]{.smallcaps}**         |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Corrects errors in effective dates  | §141.    |           |        |
| for §§141.86-141.91 and Part 142 to | 80(a)(2) |           |        |
| become effective on July 7, 1991,   |          |           |        |
| and for §§141.80-141.85 to become   |          |           |        |
| effective on December 7, 1992.      |          |           |        |
| *(Technical Corrections, July 15,   |          |           |        |
| 1991 & June 29, 1992)*              |          |           |        |
+-------------------------------------+----------+-----------+--------+
| **[§141.81 Applicability of         |          |           |        |
| Corrosion Control Treatment Steps   |          |           |        |
| to Small, Medium-size and Large     |          |           |        |
| Water Systems]{.smallcaps}**        |          |           |        |
+-------------------------------------+----------+-----------+--------+
| **Determination of optimal          | §1       |           |        |
| corrosion control treatment**       | 41.81(b) |           |        |
|                                     |          |           |        |
| Systems deemed to have optimized    |          |           |        |
| corrosion control must continue to  |          |           |        |
| operate optimal corrosion control   |          |           |        |
| treatment already in place, and to  |          |           |        |
| fulfill any other tasks that State  |          |           |        |
| requires to ensure such treatment   |          |           |        |
| is maintained.                      |          |           |        |
+-------------------------------------+----------+-----------+--------+
| *\*Clarification\*:* Systems deemed | §141.    |           |        |
| to have optimized corrosion control | 81(b)(2) |           |        |
| under this paragraph must comply    |          |           |        |
| with State-designated optimal water |          |           |        |
| quality parameters (OWQPs) and      |          |           |        |
| continue lead and copper tap and    |          |           |        |
| WQP sampling.                       |          |           |        |
+-------------------------------------+----------+-----------+--------+
| System may be deemed to have        | §141.81( |           |        |
| optimized corrosion control under   | b)(3)(i) |           |        |
| §141.81(b)(3) if source water lead  |          |           |        |
| levels are below the method         |          |           |        |
| detection limit (MDL) and 90^th^    |          |           |        |
| percentile tap lead level is less   |          |           |        |
| than or equal to the practical      |          |           |        |
| quantitation level (PQL) for lead,  |          |           |        |
| for 2 consecutive 6-month           |          |           |        |
| monitoring periods.                 |          |           |        |
+-------------------------------------+----------+-----------+--------+
| System deemed to have optimized     | §        |           |        |
| corrosion control under             | 141.81(b |           |        |
| §141.81(b)(3) must continue tap     | )(3)(ii) |           |        |
| monitoring for lead and copper,     |          |           |        |
| using reduced number of sites, at   |          |           |        |
| least once every 3 years, according |          |           |        |
| to §141.86(d)(4)(iv).               |          |           |        |
|                                     |          |           |        |
| Any such system which has not       |          |           |        |
| conducted this monitoring since     |          |           |        |
| September 30, 1997, must complete a |          |           |        |
| round of monitoring no later than   |          |           |        |
| September 30, 2000.                 |          |           |        |
+-------------------------------------+----------+-----------+--------+
| System deemed to have optimized     | §1       |           |        |
| corrosion control according to      | 41.81(b) |           |        |
| §141.81(b)(3) must notify State in  | (3)(iii) |           |        |
| writing of any change in treatment  |          |           |        |
| or addition of new source.          |          |           |        |
|                                     |          |           |        |
| State may require system to do      |          |           |        |
| additional monitoring or perform    |          |           |        |
| other tasks to ensure minimal       |          |           |        |
| corrosion in distribution system.   |          |           |        |
+-------------------------------------+----------+-----------+--------+
| System must meet copper action      | §        |           |        |
| level in order to be deemed to have | 141.81(b |           |        |
| optimized corrosion control         | )(3)(iv) |           |        |
| according to §141.81(b)(3). If      |          |           |        |
| system does not meet copper action  |          |           |        |
| level, it must implement corrosion  |          |           |        |
| control treatment according to      |          |           |        |
| §141.81(b)(3)(v).                   |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Any system triggered into corrosion | §141.81( |           |        |
| control because it is no longer     | b)(3)(v) |           |        |
| deemed to have optimized corrosion  |          |           |        |
| control under §141.81(b)(3) must    |          |           |        |
| begin corrosion control treatment   |          |           |        |
| steps according to deadlines in     |          |           |        |
| §141.81(e).                         |          |           |        |
|                                     |          |           |        |
| Any such large system must adhere   |          |           |        |
| to schedule specified in §141.81(e) |          |           |        |
| for medium-size systems, with the   |          |           |        |
| time periods for completing each    |          |           |        |
| step being triggered by the date    |          |           |        |
| system is no longer deemed to have  |          |           |        |
| optimized corrosion control.        |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  Specifies that small or         | §1       |           |        |
|     medium-size systems must        | 41.81(c) |           |        |
|     implement corrosion control     |          |           |        |
|     treatment steps if they exceed  |          |           |        |
|     lead or copper action level,    |          |           |        |
|     even if they were previously    |          |           |        |
|     deemed to have optimized        |          |           |        |
|     corrosion control according to  |          |           |        |
|     §141.81(b)(1). *(Technical      |          |           |        |
|     Correction, June 30, 1994)*     |          |           |        |
+-------------------------------------+----------+-----------+--------+
| **[§141.82 Description of Corrosion |          |           |        |
| Control Treatment                   |          |           |        |
| Requirements]{.smallcaps}**         |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Continued operation and monitoring  | §1       |           |        |
|                                     | 41.82(g) |           |        |
| Compliance will be determined every |          |           |        |
| 6 months as specified under         |          |           |        |
| §141.87(d).                         |          |           |        |
|                                     |          |           |        |
| System is out of compliance during  |          |           |        |
| any 6-month period in which it has  |          |           |        |
| excursions for any State-specified  |          |           |        |
| parameter on more than 9 days       |          |           |        |
| during period.                      |          |           |        |
|                                     |          |           |        |
| An excursion occurs when the daily  |          |           |        |
| value for any WQP is below minimum  |          |           |        |
| value or outside range designated   |          |           |        |
| by the State.                       |          |           |        |
|                                     |          |           |        |
| Daily values for a sampling         |          |           |        |
| location are calculated as follows: |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  On days when more than one      | §141.    |           |        |
|     measurement for WQP is          | 82(g)(1) |           |        |
|     collected, daily value is       |          |           |        |
|     average of all results          |          |           |        |
|     collected during day.           |          |           |        |
|                                     |          |           |        |
| ```{=html}                          |          |           |        |
| <!-- -->                            |          |           |        |
| ```                                 |          |           |        |
| 1.  Daily value is calculated in    |          |           |        |
|     same manner, regardless of      |          |           |        |
|     whether measurements are        |          |           |        |
|     collected using continuous      |          |           |        |
|     monitoring, grab sampling, or   |          |           |        |
|     both.                           |          |           |        |
|                                     |          |           |        |
| ```{=html}                          |          |           |        |
| <!-- -->                            |          |           |        |
| ```                                 |          |           |        |
| 1.  If EPA has approved alternative |          |           |        |
|     formula under §142.16, the      |          |           |        |
|     State's formula is to be used   |          |           |        |
|     to aggregate multiple           |          |           |        |
|     measurements taken at sampling  |          |           |        |
|     point for WQP in lieu of        |          |           |        |
|     formula in this paragraph.      |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 2.  On days when only one           | §141.    |           |        |
|     measurement is collected, daily | 82(g)(2) |           |        |
|     value is the result of that     |          |           |        |
|     measurement.                    |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  On days when no WQP measurement | §141.    |           |        |
|     is collected, daily value is    | 82(g)(3) |           |        |
|     one calculated on most recent   |          |           |        |
|     day on which WQP was measured   |          |           |        |
|     at sample site.                 |          |           |        |
+-------------------------------------+----------+-----------+--------+
| **[§141.83 Source Water Treatment   |          |           |        |
| Requirements -]{.smallcaps} *There  |          |           |        |
| were no revisions to this           |          |           |        |
| section.***                         |          |           |        |
+-------------------------------------+----------+-----------+--------+
| **[§141.84 Lead Service Line        |          |           |        |
| Replacement]{.smallcaps}**          |          |           |        |
+-------------------------------------+----------+-----------+--------+
| When identifying initial number of  | §1       |           |        |
| lead service lines (LSLs) in        | 41.84(b) |           |        |
| distribution system, systems must   |          |           |        |
| identify portion(s) of lines they   |          |           |        |
| own.                                |          |           |        |
|                                     |          |           |        |
| Identification is based on          |          |           |        |
| materials evaluation and relevant   |          |           |        |
| legal authorities.                  |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Partial LSL replacement             | §1       |           |        |
|                                     | 41.84(d) |           |        |
| System must replace portion of LSL  |          |           |        |
| that it owns.                       |          |           |        |
|                                     |          |           |        |
| When replacing part of line that it |          |           |        |
| owns, systems must notify owner (or |          |           |        |
| owner's authorized agent) about the |          |           |        |
| replacement, and offer to replace   |          |           |        |
| owner's portion of line.            |          |           |        |
|                                     |          |           |        |
| System is not required to bear cost |          |           |        |
| of replacing privately owned        |          |           |        |
| portion of line, or to replace      |          |           |        |
| privately-owned portion where       |          |           |        |
| precluded by local law, or where    |          |           |        |
| owner chooses not to pay cost of    |          |           |        |
| replacing privately-owned portion.  |          |           |        |
|                                     |          |           |        |
| Systems replacing only portion of   |          |           |        |
| LSL must:                           |          |           |        |
+-------------------------------------+----------+-----------+--------+
| > At least 45 days prior to partial | §141.    |           |        |
| > line replacement, notify all      | 84(d)(1) |           |        |
| > residents served by line of       |          |           |        |
| > possible temporary increase in    |          |           |        |
| > lead levels and provide guidance  |          |           |        |
| > on minimizing exposure to lead.   |          |           |        |
| > State can approve shorter time    |          |           |        |
| > for this advance notice if        |          |           |        |
| > replacement done in conjunction   |          |           |        |
| > with emergency repairs.           |          |           |        |
| >                                   |          |           |        |
| > Inform residents that system      |          |           |        |
| > will, at system's expense,        |          |           |        |
| > collect a sample representative   |          |           |        |
| > of water in line within 72 hours  |          |           |        |
| > after partial line replacement.   |          |           |        |
| >                                   |          |           |        |
| > Collect sample and mail/post      |          |           |        |
| > results of lead analysis to owner |          |           |        |
| > and residents within 3 business   |          |           |        |
| > days of receiving results.        |          |           |        |
+-------------------------------------+----------+-----------+--------+
| > System must provide               | §141.    |           |        |
| > post-replacement sample results   | 84(d)(2) |           |        |
| > to residents of individual        |          |           |        |
| > dwellings by mail or other        |          |           |        |
| > State-approved methods.           |          |           |        |
| >                                   |          |           |        |
| > For multi-family dwellings,       |          |           |        |
| > system has option to post this    |          |           |        |
| > information at conspicuous        |          |           |        |
| > location.                         |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Eliminates original language in     | §1       |           |        |
| paragraph (e) pertaining to         | 41.84(e) |           |        |
| system's "control" of LSL and       |          |           |        |
| system's submission of              |          |           |        |
| documentation that proves limited   |          |           |        |
| control of LSL.                     |          |           |        |
|                                     |          |           |        |
| §141.84(f) has been renumbered as   |          |           |        |
| (e). The language in (f) has not    |          |           |        |
| changed.                            |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  Specifies that systems must     | §1       |           |        |
|     meet lead action level in       | 41.84(f) |           |        |
|     first-draw tap water samples,   |          |           |        |
|     rather than LSL samples, in     |          |           |        |
|     order to cease LSL replacement. |          |           |        |
|     *(Technical Correction June 29, |          |           |        |
|     1992)*                          |          |           |        |
|                                     |          |           |        |
| §141.84(g) has been renumbered as   |          |           |        |
| (f).                                |          |           |        |
+-------------------------------------+----------+-----------+--------+
| §141.84(h) has been renumbered as   | §1       |           |        |
| (g). The language in (h) has not    | 41.84(g) |           |        |
| changed.                            |          |           |        |
+-------------------------------------+----------+-----------+--------+
| **[§141.85 Public Education and     |          |           |        |
| Supplemental                        |          |           |        |
| Monitoring]{.smallcaps}**           |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Content of written public education | §1       |           |        |
| materials                           | 41.85(a) |           |        |
+-------------------------------------+----------+-----------+--------+
| Content of written public education | §141.    |           |        |
| materials for CWSs:                 | 85(a)(1) |           |        |
|                                     |          |           |        |
| • If approved by State, systems may | *        |           |        |
| now delete information pertaining   | formerly |           |        |
| to LSLs if no LSLs exist in system. | §14      |           |        |
|                                     | 1.85(a)* |           |        |
| • If approved by State, systems may |          |           |        |
| now modify language at              |          |           |        |
| §§141.85(a)(1)(iv)(B)(*5*) and      |          |           |        |
| (a)(1)(iv)(D)(*2*) regarding        |          |           |        |
| building permit record availability |          |           |        |
| and consumer access to these        |          |           |        |
| records.                            |          |           |        |
|                                     |          |           |        |
| • Systems may continue to use       |          |           |        |
| pre-printed materials that meet     |          |           |        |
| public education language           |          |           |        |
| requirements of original Rule       |          |           |        |
| promulgated on June 7, 1991.        |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Modifies public education language  | §141.85( |           |        |
| regarding LSLs, to require system   | a)(1)(i) |           |        |
| to include in public education      |          |           |        |
| materials the fact that it is       | *        |           |        |
| required to replace portions of     | formerly |           |        |
| LSLs that it owns.                  | §141.8   |           |        |
|                                     | 5(a)(1)* |           |        |
| • Specifies that the mandatory      |          |           |        |
| public education language should    |          |           |        |
| state that systems must replace     |          |           |        |
| LSLs that contribute lead levels of |          |           |        |
| [more than]{.underline} 15 ppb,     |          |           |        |
| rather than 15 ppb or more.         |          |           |        |
| *(Technical Correction June 29,     |          |           |        |
| 1992)*                              |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Redesignates the following          | §        |           |        |
| paragraphs without additional       | 141.85(a |           |        |
| language changes:                   | )(1)(ii) |           |        |
|                                     |          |           |        |
| > • §141.85(a)(2)                   |          |           |        |
+-------------------------------------+----------+-----------+--------+
| > • §141.85(a)(3)                   | §1       |           |        |
|                                     | 41.85(a) |           |        |
|                                     | (1)(iii) |           |        |
+-------------------------------------+----------+-----------+--------+
| > • §141.85(a)(3)(i)                | §141.    |           |        |
|                                     | 85(a)(1) |           |        |
|                                     | (iii)(A) |           |        |
+-------------------------------------+----------+-----------+--------+
| > • §141.85(a)(3)(ii)               | §141.    |           |        |
|                                     | 85(a)(1) |           |        |
|                                     | (iii)(B) |           |        |
+-------------------------------------+----------+-----------+--------+
| > • §141.85(a)(3)(iii)              | §141.    |           |        |
|                                     | 85(a)(1) |           |        |
|                                     | (iii)(C) |           |        |
+-------------------------------------+----------+-----------+--------+
| > • §141.85(a)(4)                   | §        |           |        |
|                                     | 141.85(a |           |        |
|                                     | )(1)(iv) |           |        |
+-------------------------------------+----------+-----------+--------+
| > • §141.85(a)(4)(i)                | §141     |           |        |
|                                     | .85(a)(1 |           |        |
|                                     | )(iv)(A) |           |        |
+-------------------------------------+----------+-----------+--------+
| > • §141.85(a)(4)(ii)               | §141     |           |        |
|                                     | .85(a)(1 |           |        |
|                                     | )(iv)(B) |           |        |
+-------------------------------------+----------+-----------+--------+
| > • §141.85(a)(4)(ii)(A)            | §        |           |        |
|                                     | 141.85(a |           |        |
|                                     | )(1)(iv) |           |        |
|                                     | (B)(*1*) |           |        |
+-------------------------------------+----------+-----------+--------+
| > • §141.85(a)(4)(ii)(B)            | §        |           |        |
|                                     | 141.85(a |           |        |
|                                     | )(1)(iv) |           |        |
|                                     | (B)(*2*) |           |        |
+-------------------------------------+----------+-----------+--------+
| > • §141.85(a)(4)(ii)(C)            | §        |           |        |
|                                     | 141.85(a |           |        |
|                                     | )(1)(iv) |           |        |
|                                     | (B)(*3*) |           |        |
+-------------------------------------+----------+-----------+--------+
| > • §141.85(a)(4)(ii)(D)            | §        |           |        |
|                                     | 141.85(a |           |        |
|                                     | )(1)(iv) |           |        |
|                                     | (B)(*4*) |           |        |
+-------------------------------------+----------+-----------+--------+
| > • §141.85(a)(4)(ii)(F)            | §        |           |        |
|                                     | 141.85(a |           |        |
|                                     | )(1)(iv) |           |        |
|                                     | (B)(*6*) |           |        |
+-------------------------------------+----------+-----------+--------+
| > • §141.85(a)(4)(iii)              | §141     |           |        |
|                                     | .85(a)(1 |           |        |
|                                     | )(iv)(C) |           |        |
+-------------------------------------+----------+-----------+--------+
| > • §141.85(a)(4)(iii)(A)           | §        |           |        |
|                                     | 141.85(a |           |        |
|                                     | )(1)(iv) |           |        |
|                                     | (C)(*1*) |           |        |
+-------------------------------------+----------+-----------+--------+
| > • §141.85(a)(4)(iii)(B)           | §        |           |        |
|                                     | 141.85(a |           |        |
|                                     | )(1)(iv) |           |        |
|                                     | (C)(*2*) |           |        |
+-------------------------------------+----------+-----------+--------+
| > • §141.85(a)(4)(iv)               | §141     |           |        |
|                                     | .85(a)(1 |           |        |
|                                     | )(iv)(D) |           |        |
+-------------------------------------+----------+-----------+--------+
| > • §141.85(a)(4)(iv)(A)            | §        |           |        |
|                                     | 141.85(a |           |        |
|                                     | )(1)(iv) |           |        |
|                                     | (D)(*1)* |           |        |
+-------------------------------------+----------+-----------+--------+
| > • §141.85(a)(4)(iv)(C)            | §        |           |        |
|                                     | 141.85(a |           |        |
|                                     | )(1)(iv) |           |        |
|                                     | (D)(*3*) |           |        |
+-------------------------------------+----------+-----------+--------+
| > • §141.85(a)(4)(v)                | §141     |           |        |
|                                     | .85(a)(1 |           |        |
|                                     | )(iv)(E) |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  Revises language regarding LSLs | §        |           |        |
|     to be consistent with the       | 141.85(a |           |        |
|     changes in §141.84. Systems are | )(1)(iv) |           |        |
|     required to inform public of    | (B)(*5*) |           |        |
|     system's new partial LSL        |          |           |        |
|     notification requirements.      | *        |           |        |
|                                     | formerly |           |        |
|                                     | §141.    |           |        |
|                                     | 85(a)(4) |           |        |
|                                     | (ii)(E)* |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  Corrects a minor typographical  | §        |           |        |
|     error: The text now reads "city | 141.85(a |           |        |
|     or county department," instead  | )(1)(iv) |           |        |
|     of "city of county department." | (D)*(2)* |           |        |
|     *(Technical Correction, June    |          |           |        |
|     29, 1992)*                      | *        |           |        |
|                                     | formerly |           |        |
|                                     | §141.    |           |        |
|                                     | 85(a)(4) |           |        |
|                                     | (iv)(B)* |           |        |
+-------------------------------------+----------+-----------+--------+
| Adds language for printed public    | §141.    |           |        |
| education material for NTNCWSs:     | 85(a)(2) |           |        |
|                                     |          |           |        |
| System may use CWS language or use  |          |           |        |
| following text in public education  |          |           |        |
| program; any information added by   |          |           |        |
| system must be consistent with EPA  |          |           |        |
| language and be in plain English.   |          |           |        |
|                                     |          |           |        |
| • If approved by State, systems may |          |           |        |
| delete information pertaining to    |          |           |        |
| LSLs, if no lead service lines      |          |           |        |
| exist in system.                    |          |           |        |
+-------------------------------------+----------+-----------+--------+
| • Introduction                      | §141.85( |           |        |
|                                     | a)(2)(i) |           |        |
| > -lead levels exceed 15 ppb in     |          |           |        |
| > some samples in facility          |          |           |        |
| >                                   |          |           |        |
| > -system required to minimize lead |          |           |        |
| > in drinking water by a certain    |          |           |        |
| > date through corrosion control    |          |           |        |
| > treatment, and/or source water    |          |           |        |
| > treatment, and public education   |          |           |        |
| >                                   |          |           |        |
| > -if, after treatment program in   |          |           |        |
| > place, a LSL contributes lead     |          |           |        |
| > levels \> 15 ppb, system required |          |           |        |
| > to replace portion of each LSL    |          |           |        |
| > that it owns                      |          |           |        |
| >                                   |          |           |        |
| > -insert system's phone number so  |          |           |        |
| > consumers can call with questions |          |           |        |
+-------------------------------------+----------+-----------+--------+
| • Health effects of lead            | §        |           |        |
|                                     | 141.85(a |           |        |
| > -places where lead is normally    | )(2)(ii) |           |        |
| > found                             |          |           |        |
| >                                   |          |           |        |
| > -lead poses significant risk to   |          |           |        |
| > health                            |          |           |        |
| >                                   |          |           |        |
| > -greatest risk is to pregnant     |          |           |        |
| > women and young children          |          |           |        |
+-------------------------------------+----------+-----------+--------+
| • Lead in drinking water            | §1       |           |        |
|                                     | 41.85(a) |           |        |
|                                     | (2)(iii) |           |        |
+-------------------------------------+----------+-----------+--------+
| > -lead in drinking water can       | §141.    |           |        |
| > significantly increase a person's | 85(a)(2) |           |        |
| > total lead exposure, especially   | (iii)(A) |           |        |
| > in infants                        |          |           |        |
+-------------------------------------+----------+-----------+--------+
| > -lead enters drinking water       | §141.    |           |        |
| > primarily through corrosion of    | 85(a)(2) |           |        |
| > distribution mains and household  | (iii)(B) |           |        |
| > plumbing containing lead          |          |           |        |
| >                                   |          |           |        |
| > -in 1986, Congress passed laws    |          |           |        |
| > regulating lead content in        |          |           |        |
| > plumbing                          |          |           |        |
+-------------------------------------+----------+-----------+--------+
| > -tap water that has been standing | §141.    |           |        |
| > for several hours can contain     | 85(a)(2) |           |        |
| > high lead levels                  | (iii)(C) |           |        |
+-------------------------------------+----------+-----------+--------+
| • Steps to Reduce Exposure          | §        |           |        |
|                                     | 141.85(a |           |        |
|                                     | )(2)(iv) |           |        |
+-------------------------------------+----------+-----------+--------+
| > -flush tap before using water for | §141     |           |        |
| > drinking or cooking when water    | .85(a)(2 |           |        |
| > has been unused for more than 6   | )(iv)(A) |           |        |
| > hours                             |          |           |        |
+-------------------------------------+----------+-----------+--------+
| > -use cold water, not hot, for     | §141     |           |        |
| > drinking and cooking              | .85(a)(2 |           |        |
|                                     | )(iv)(B) |           |        |
+-------------------------------------+----------+-----------+--------+
| > -if still concerned about lead    | §141     |           |        |
| > levels, use bottled water for     | .85(a)(2 |           |        |
| > drinking and cooking              | )(iv)(C) |           |        |
+-------------------------------------+----------+-----------+--------+
| > -doctor can perform a blood test  | §141     |           |        |
| > for lead                          | .85(a)(2 |           |        |
| >                                   | )(iv)(D) |           |        |
| > -other sources of information     |          |           |        |
| > about lead:                       |          |           |        |
+-------------------------------------+----------+-----------+--------+
| > \--name and phone number of       | §        |           |        |
| > drinking water supply official    | 141.85(a |           |        |
|                                     | )(2)(iv) |           |        |
|                                     | (D)(*1*) |           |        |
+-------------------------------------+----------+-----------+--------+
| > \--phone number of State, county, | §        |           |        |
| > or city public health department  | 141.85(a |           |        |
|                                     | )(2)(iv) |           |        |
|                                     | (D)(*2*) |           |        |
+-------------------------------------+----------+-----------+--------+
| *\*Clarification\*:* CWSs need only | §141.    |           |        |
| deliver public education within 60  | 85(c)(2) |           |        |
| days of an action level exceedance  |          |           |        |
| if they are not already repeating   |          |           |        |
| public education tasks.             |          |           |        |
+-------------------------------------+----------+-----------+--------+
| If CWSs cannot easily deliver       | §141.85( |           |        |
| public education through normal     | c)(2)(i) |           |        |
| billing process, they can now use a |          |           |        |
| separate mailing for delivery, as   |          |           |        |
| long as information is delivered    |          |           |        |
| within 60 days of exceeding action  |          |           |        |
| level. Systems must include         |          |           |        |
| mandatory alert language in package |          |           |        |
| or on outside of envelope.          |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Modifies the rule citation from     | §        |           |        |
| §141.85(a) to §141.85(a)(1) to be   | 141.85(c |           |        |
| consistent with numbering changes   | )(2)(ii) |           |        |
| in §141.85(a).                      |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Modifies the rule citations from    | §1       |           |        |
| §141.85(a)(2) and (a)(4) to         | 41.85(c) |           |        |
| §141.85(a)(1)(ii) and (a)(1)(iv) to | (2)(iii) |           |        |
| be consistent with numbering        |          |           |        |
| changes in §141.85(a).              |          |           |        |
+-------------------------------------+----------+-----------+--------+
| *\*Clarification\*:* NTNCWSs need   | §141.    |           |        |
| only deliver public education       | 85(c)(4) |           |        |
| within 60 days of action level      |          |           |        |
| exceedance if they are not already  |          |           |        |
| repeating public education tasks.   |          |           |        |
|                                     |          |           |        |
| NTNCWSs have option to use either   |          |           |        |
| the language specified for CWSs or  |          |           |        |
| for NTNCWSs.                        |          |           |        |
+-------------------------------------+----------+-----------+--------+
| States may allow NTNCWSs to use     | §        |           |        |
| electronic transmission in lieu of  | 141.85(c |           |        |
| or combined with printed materials  | )(4)(ii) |           |        |
| as long as it achieves same         |          |           |        |
| coverage.                           |          |           |        |
+-------------------------------------+----------+-----------+--------+
| CWSs may now apply to State in      | §141.85( |           |        |
| writing to use alternative language | c)(7)(i) |           |        |
| written for NTNCWSs and to use      |          |           |        |
| delivery methods allowed for        |          |           |        |
| NTNCWSs if they:                    |          |           |        |
|                                     |          |           |        |
| > • Are facilities where the        |          |           |        |
| > population cannot make            |          |           |        |
| > improvements to plumbing or       |          |           |        |
| > install point of use treatment    |          |           |        |
| > devices, and                      |          |           |        |
+-------------------------------------+----------+-----------+--------+
| > • Provide water as part of cost   | §        |           |        |
| > of services provided and do not   | 141.85(c |           |        |
| > separately charge for water use.  | )(7)(ii) |           |        |
+-------------------------------------+----------+-----------+--------+
| CWSs serving 3,300 or fewer people  | §141.85( |           |        |
| may omit submitting public service  | c)(8)(i) |           |        |
| announcements as long as they       |          |           |        |
| distribute to every household they  |          |           |        |
| serve. May further reduce public    |          |           |        |
| education program as follows:       |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  CWSs serving 500 or fewer       | §14      |           |        |
|     people may omit submitting      | 1.85(c)( |           |        |
|     information to newspapers and   | 8)(i)(A) |           |        |
|     limit distribution of pamphlets |          |           |        |
|     to facilities that are most     |          |           |        |
|     likely to be visited regularly  |          |           |        |
|     by pregnant women and children, |          |           |        |
|     unless notified by State in     |          |           |        |
|     writing that they must make     |          |           |        |
|     broader distribution.           |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 2.  CWSs serving 501 to 3,300       | §14      |           |        |
|     people may limit such public    | 1.85(c)( |           |        |
|     education delivery in same way, | 8)(i)(B) |           |        |
|     if approved by State in         |          |           |        |
|     writing.                        |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  CWSs serving 3,300 or fewer     | §        |           |        |
|     people that deliver public      | 141.85(c |           |        |
|     education according to          | )(8)(ii) |           |        |
|     §141.85(c)(8)(i) must repeat    |          |           |        |
|     required public education tasks |          |           |        |
|     at least once during each       |          |           |        |
|     calendar year in which they     |          |           |        |
|     exceed lead action level.       |          |           |        |
+-------------------------------------+----------+-----------+--------+
| **[§141.86 Monitoring Requirements  |          |           |        |
| For Lead and Copper in Tap          |          |           |        |
| Water]{.smallcaps}**                |          |           |        |
+-------------------------------------+----------+-----------+--------+
| CWSs with insufficient tier 1, 2,   | §141.    |           |        |
| and 3 sampling sites must complete  | 86(a)(5) |           |        |
| sampling pool with representative   |          |           |        |
| sites throughout distribution       |          |           |        |
| system. A site is representative if |          |           |        |
| plumbing materials used at site     |          |           |        |
| would be commonly found at other    |          |           |        |
| sites served by system.             |          |           |        |
+-------------------------------------+----------+-----------+--------+
| NTNCWSs with insufficient tier 1    | §141.    |           |        |
| and 2 sites must complete sampling  | 86(a)(7) |           |        |
| pool with representative sites      |          |           |        |
| throughout distribution system. A   |          |           |        |
| site is representative if plumbing  |          |           |        |
| materials used at site would be     |          |           |        |
| commonly found at other sites       |          |           |        |
| served by system.                   |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  Specifies that systems must     | §141.    |           |        |
|     collect first-draw samples,     | 86(a)(8) |           |        |
|     rather than LSL samples, from   |          |           |        |
|     sites served by LSLs.           |          |           |        |
|     *(Technical Corrections, June   |          |           |        |
|     29, 1992)*                      |          |           |        |
|                                     |          |           |        |
| ```{=html}                          |          |           |        |
| <!-- -->                            |          |           |        |
| ```                                 |          |           |        |
| 1.  Systems no longer have to       |          |           |        |
|     justify to State in writing why |          |           |        |
|     they do not use sufficient      |          |           |        |
|     number of tier 1 sites or sites |          |           |        |
|     served by LSL. These            |          |           |        |
|     requirements were contained in  |          |           |        |
|     §§141.86(a)(8) and (9).         |          |           |        |
|                                     |          |           |        |
| ```{=html}                          |          |           |        |
| <!-- -->                            |          |           |        |
| ```                                 |          |           |        |
| 1.  EPA has deleted the old         |          |           |        |
|     language in (a)(8), and moved   |          |           |        |
|     the remaining language in       |          |           |        |
|     (a)(9) to (a)(8). There is no   |          |           |        |
|     longer an (a)(9).               |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Samples collected under             | §141.    |           |        |
| §141.86(b)(5) are not required to   | 86(b)(1) |           |        |
| be first-draw samples.              |          |           |        |
+-------------------------------------+----------+-----------+--------+
| • Non-first-draw samples collected  | §141.    |           |        |
| in place of first-draw samples      | 86(b)(2) |           |        |
| under §141.86(b)(5) must be one     |          |           |        |
| liter and must be collected from    |          |           |        |
| interior tap from which water is    |          |           |        |
| typically consumed.                 |          |           |        |
|                                     |          |           |        |
| • Changes minimum holding time for  |          |           |        |
| acidified lead and copper samples   |          |           |        |
| prior to analysis to be "the time   |          |           |        |
| specified in the approved EPA       |          |           |        |
| method."                            |          |           |        |
|                                     |          |           |        |
| \**Clarification\*:* First-draw     |          |           |        |
| samples from nonresidential         |          |           |        |
| buildings must also be one liter in |          |           |        |
| volume.                             |          |           |        |
|                                     |          |           |        |
| 1.  Includes a sentence that was    |          |           |        |
|     omitted from original rule of   |          |           |        |
|     June 7, 1991: allowing          |          |           |        |
|     acidification of first-draw     |          |           |        |
|     samples up to 14 days after     |          |           |        |
|     sample is collected.            |          |           |        |
|     *(Technical Corrections, July   |          |           |        |
|     15, 1991)*                      |          |           |        |
+-------------------------------------+----------+-----------+--------+
| • NTNCWSs (and CWSs that meet       | §141.    |           |        |
| criteria of §141.85(c)(7)) without  | 86(b)(5) |           |        |
| enough taps to supply first-draw    |          |           |        |
| samples may apply to State in       |          |           |        |
| writing to substitute               |          |           |        |
| non-first-draw samples.             |          |           |        |
|                                     |          |           |        |
| • Such systems must collect as many |          |           |        |
| first-draw tap samples as possible, |          |           |        |
| and identify sampling times and     |          |           |        |
| locations that would likely result  |          |           |        |
| in longest standing time for        |          |           |        |
| remaining sample sites.             |          |           |        |
|                                     |          |           |        |
| • State can waive requirement for   |          |           |        |
| prior State approval of             |          |           |        |
| non-first-draw sample sites.        |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  Reduced monitoring sites must   | §1       |           |        |
|     be representative of sites      | 41.86(c) |           |        |
|     required for standard           |          |           |        |
|     monitoring.                     |          |           |        |
|                                     |          |           |        |
| ```{=html}                          |          |           |        |
| <!-- -->                            |          |           |        |
| ```                                 |          |           |        |
| 1.  States may now specify sampling |          |           |        |
|     locations for systems on        |          |           |        |
|     reduced monitoring.             |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  Specifies that small and        | §141     |           |        |
|     medium-size systems that meet   | .86(d)(1 |           |        |
|     both action levels during 2     | )(ii)(B) |           |        |
|     consecutive 6-month periods can |          |           |        |
|     reduce number and frequency of  |          |           |        |
|     tap sampling. *(Technical       |          |           |        |
|     Corrections, June 29, 1992)*    |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Systems no longer have to request   | §        |           |        |
| State permission to go on annual    | 141.86(d |           |        |
| reduced monitoring. State instead   | )(4)(ii) |           |        |
| must review water quality data      |          |           |        |
| submitted by system and provide     |          |           |        |
| written approval when it determines |          |           |        |
| system is eligible for annual       |          |           |        |
| reduced monitoring.                 |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Systems no longer have to request   | §1       |           |        |
| State permission to go on triennial | 41.86(d) |           |        |
| reduced monitoring. State instead   | (4)(iii) |           |        |
| must review water quality data      |          |           |        |
| submitted by system and provide     |          |           |        |
| written approval when it determines |          |           |        |
| system is eligible for triennial    |          |           |        |
| reduced monitoring.                 |          |           |        |
+-------------------------------------+----------+-----------+--------+
| \**Clarification\*:* System on      | §        |           |        |
| reduced monitoring must collect     | 141.86(d |           |        |
| samples from representative sites.  | )(4)(iv) |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  Systems on reduced monitoring   | §        |           |        |
|     can now monitor during          | 141.86(d |           |        |
|     different period besides June - | )(4)(iv) |           |        |
|     September, if approved by       |          |           |        |
|     State.                          |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  If State approves alternate     | §141     |           |        |
|     sampling period, it must be no  | .86(d)(4 |           |        |
|     longer than 4 consecutive       | )(iv)(A) |           |        |
|     months and must represent time  |          |           |        |
|     of normal operation where       |          |           |        |
|     highest lead levels are most    |          |           |        |
|     likely to occur.                |          |           |        |
|                                     |          |           |        |
| 2.  For NTNCWSs that do not operate |          |           |        |
|     during June - September, and    |          |           |        |
|     for which period of highest     |          |           |        |
|     lead levels is not known, State |          |           |        |
|     must designate period that      |          |           |        |
|     represents time of normal       |          |           |        |
|     operation.                      |          |           |        |
+-------------------------------------+----------+-----------+--------+
| If system on annual reduced         | §141     |           |        |
| monitoring switches from sampling   | .86(d)(4 |           |        |
| in June - September to different    | )(iv)(B) |           |        |
| State-approved sampling period, it  |          |           |        |
| must collect next round during a    |          |           |        |
| period that ends no later than 21   |          |           |        |
| months after previous round of      |          |           |        |
| sampling.                           |          |           |        |
|                                     |          |           |        |
| If system on triennial reduced      |          |           |        |
| monitoring switches from sampling   |          |           |        |
| in June -September to different     |          |           |        |
| State-approved sampling period, it  |          |           |        |
| must collect next round during a    |          |           |        |
| period that ends no later than 45   |          |           |        |
| months after previous round of      |          |           |        |
| sampling.                           |          |           |        |
|                                     |          |           |        |
| System must collect subsequent      |          |           |        |
| rounds of sampling annually or      |          |           |        |
| triennially.                        |          |           |        |
|                                     |          |           |        |
| If small system with monitoring     |          |           |        |
| waiver switches from sampling in    |          |           |        |
| June - September to a different     |          |           |        |
| State-approved sampling period, it  |          |           |        |
| must collect next round before end  |          |           |        |
| of 9-year monitoring period.        |          |           |        |
+-------------------------------------+----------+-----------+--------+
| If system has 90^th^ percentile     | §141.86( |           |        |
| lead level at tap of                | d)(4)(v) |           |        |
| [\<]{.underline} 0.005 mg/L, and    |          |           |        |
| 90^th^ percentile copper level at   |          |           |        |
| tap of [\<]{.underline} 0.65 mg/L   |          |           |        |
| for 2 consecutive 6-month periods,  |          |           |        |
| it may reduce number of samples and |          |           |        |
| reduce frequency of sampling to     |          |           |        |
| once every 3 calendar years.        |          |           |        |
+-------------------------------------+----------+-----------+--------+
| System that has lost eligibility    | §141     |           |        |
| for annual monitoring may resume    | .86(d)(4 |           |        |
| annual reduced lead and copper tap  | )(vi)(A) |           |        |
| monitoring after it has completed   |          |           |        |
| two subsequent consecutive 6-month  | *        |           |        |
| rounds of monitoring that are at or | formerly |           |        |
| below the action level. System that | §        |           |        |
| has lost eligibility for triennial  | 141.86(d |           |        |
| monitoring may resume once meet     | )(4)(v)* |           |        |
| criteria in §141.86(d)(4)(iii) or   |          |           |        |
| §141.86(d)(4)(v).                   |          |           |        |
|                                     |          |           |        |
| • Language regarding systems that   |          |           |        |
| fail to operate according to WQPs   |          |           |        |
| specified by State has been moved   |          |           |        |
| to §141.86(d)(4)(vi)(B) and         |          |           |        |
| revised.                            |          |           |        |
|                                     |          |           |        |
| Specifies that small and            |          |           |        |
| medium-size systems that exceed     |          |           |        |
| action level while on reduced       |          |           |        |
| monitoring must collect WQPs during |          |           |        |
| period in which they had            |          |           |        |
| exceedance. *(Technical             |          |           |        |
| Corrections, June 29, 1992)*        |          |           |        |
+-------------------------------------+----------+-----------+--------+
| • Any system failing to operate in  | §141     |           |        |
| accordance with State-specified     | .86(d)(4 |           |        |
| WQPs for more than 9 days in a      | )(vi)(B) |           |        |
| 6-month period must resume standard |          |           |        |
| monitoring for lead and copper at   |          |           |        |
| tap. Such a system must also resume |          |           |        |
| WQP monitoring in distribution      |          |           |        |
| system according to §141.87(d).     |          |           |        |
|                                     |          |           |        |
| • Such a system may resume reduced  |          |           |        |
| monitoring for lead and copper at   |          |           |        |
| tap and for WQPs in distribution    |          |           |        |
| system under following conditions:  |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  System may resume annual        | §        |           |        |
|     reduced lead and copper tap     | 141.86(d |           |        |
|     monitoring after:               | )(4)(vi) |           |        |
|                                     | (B)(*1*) |           |        |
| > \--completing 2 subsequent        |          |           |        |
| > consecutive 6-months of           |          |           |        |
| > monitoring that again meet        |          |           |        |
| > criteria for annual reduced       |          |           |        |
| > monitoring, and                   |          |           |        |
| >                                   |          |           |        |
| > \--receiving written approval     |          |           |        |
| > from State to resume annual       |          |           |        |
| > reduced monitoring.               |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  System may resume triennial     | §        |           |        |
|     reduced lead and copper tap     | 141.86(d |           |        |
|     monitoring after:               | )(4)(vi) |           |        |
|                                     | (B)(*2*) |           |        |
| > \--completing enough subsequent   |          |           |        |
| > rounds of monitoring that again   |          |           |        |
| > meet the criteria for triennial   |          |           |        |
| > reduced monitoring, and           |          |           |        |
| >                                   |          |           |        |
| > \--receiving written approval     |          |           |        |
| > from State to resume triennial    |          |           |        |
| > reduced monitoring.               |          |           |        |
+-------------------------------------+----------+-----------+--------+
| • System may resume reduced         | §        |           |        |
| monitoring for WQPs at tap.         | 141.86(d |           |        |
|                                     | )(4)(vi) |           |        |
| • System must re-qualify for        | (B)(*3*) |           |        |
| triennial monitoring according to   |          |           |        |
| §141.87(e)(2) in order to resume    |          |           |        |
| triennial monitoring for WQPs at    |          |           |        |
| tap.                                |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Systems on reduced monitoring that  | §1       |           |        |
| add new source of water or change   | 41.86(d) |           |        |
| treatment must notify State in      | (4)(vii) |           |        |
| writing within 60 days, unless      |          |           |        |
| State requires earlier              |          |           |        |
| notification.                       |          |           |        |
|                                     |          |           |        |
| State may require system to take    |          |           |        |
| additional measures, such as        |          |           |        |
| commencing standard monitoring,     |          |           |        |
| increased WQP monitoring, or        |          |           |        |
| re-evaluation of corrosion control  |          |           |        |
| treatment.                          |          |           |        |
+-------------------------------------+----------+-----------+--------+
| **Invalidation of lead or copper    | §1       |           |        |
| tap samples**                       | 41.86(f) |           |        |
|                                     |          |           |        |
| • Systems may request that State    |          |           |        |
| invalidate samples, under certain   |          |           |        |
| circumstances.                      |          |           |        |
|                                     |          |           |        |
| • An invalidated sample does not    |          |           |        |
| count toward determining 90^th^     |          |           |        |
| percentile levels or toward meeting |          |           |        |
| minimum monitoring requirements.    |          |           |        |
+-------------------------------------+----------+-----------+--------+
| The State may invalidate a lead or  | §141.    |           |        |
| copper tap sample if at least one   | 86(f)(1) |           |        |
| of following occurs:                |          |           |        |
+-------------------------------------+----------+-----------+--------+
| > • Improper analysis at lab caused | §141.86( |           |        |
| > erroneous results                 | f)(1)(i) |           |        |
+-------------------------------------+----------+-----------+--------+
| > • Sample was taken from site that | §        |           |        |
| > did not meet site selection       | 141.86(f |           |        |
| > criteria                          | )(1)(ii) |           |        |
+-------------------------------------+----------+-----------+--------+
| > • Sample container was damaged in | §1       |           |        |
| > transit                           | 41.86(f) |           |        |
|                                     | (1)(iii) |           |        |
+-------------------------------------+----------+-----------+--------+
| > • State believes sample may have  | §        |           |        |
| > been subject to tampering         | 141.86(f |           |        |
|                                     | )(1)(iv) |           |        |
+-------------------------------------+----------+-----------+--------+
| System must report to State results | §141.    |           |        |
| of all samples and all              | 86(f)(2) |           |        |
| documentation of reasons for        |          |           |        |
| invalidation.                       |          |           |        |
+-------------------------------------+----------+-----------+--------+
| • To invalidate sample, State       | §141.    |           |        |
| decision and reason for decision    | 86(f)(3) |           |        |
| must be documented in writing.      |          |           |        |
|                                     |          |           |        |
| • State may not invalidate sample   |          |           |        |
| solely because follow-up sample     |          |           |        |
| result is higher or lower than      |          |           |        |
| original sample.                    |          |           |        |
+-------------------------------------+----------+-----------+--------+
| • System must take replacement      | §141.    |           |        |
| samples after invalidation if it    | 86(f)(4) |           |        |
| has too few samples to meet minimum |          |           |        |
| sampling requirements.              |          |           |        |
|                                     |          |           |        |
| 1.  Replacement samples must be     |          |           |        |
|     collected for invalidated       |          |           |        |
|     samples within 20 days of date  |          |           |        |
|     State invalidates samples, or   |          |           |        |
|     by end of applicable monitoring |          |           |        |
|     period, whichever occurs later. |          |           |        |
|                                     |          |           |        |
| • Replacement samples taken after   |          |           |        |
| end of applicable monitoring period |          |           |        |
| cannot also be used to meet         |          |           |        |
| monitoring requirements of          |          |           |        |
| subsequent monitoring period.       |          |           |        |
|                                     |          |           |        |
| • Replacement samples must be taken |          |           |        |
| at same locations as invalidated    |          |           |        |
| samples; if that is not possible,   |          |           |        |
| at locations other than those       |          |           |        |
| already used for sampling during    |          |           |        |
| that monitoring period.             |          |           |        |
+-------------------------------------+----------+-----------+--------+
| **Waiver from Monitoring            | §1       |           |        |
| Requirements**                      | 41.86(g) |           |        |
|                                     |          |           |        |
| 1.  Small system is eligible to     |          |           |        |
|     apply for waiver to conduct     |          |           |        |
|     lead and copper tap monitoring  |          |           |        |
|     once every 9 years, if it meets |          |           |        |
|     following materials and         |          |           |        |
|     monitoring criteria.            |          |           |        |
|                                     |          |           |        |
| ```{=html}                          |          |           |        |
| <!-- -->                            |          |           |        |
| ```                                 |          |           |        |
| 1.  If State regulations permit,    |          |           |        |
|     small system that meets         |          |           |        |
|     criteria only for lead, or only |          |           |        |
|     for copper, may apply to State  |          |           |        |
|     for waiver for that contaminant |          |           |        |
|     only (a partial waiver).        |          |           |        |
+-------------------------------------+----------+-----------+--------+
| [Materials Criteria:]{.underline}   | §141.    |           |        |
|                                     | 86(g)(1) |           |        |
| System must certify that            |          |           |        |
| distribution, service lines, and    |          |           |        |
| drinking water plumbing are free of |          |           |        |
| lead-containing materials and/or    |          |           |        |
| copper-containing materials, as     |          |           |        |
| follows:                            |          |           |        |
+-------------------------------------+----------+-----------+--------+
| To qualify for full waiver, or for  | §141.86( |           |        |
| partial waiver for lead, system     | g)(1)(i) |           |        |
| must certify that it is free of     |          |           |        |
| following lead-containing           |          |           |        |
| materials:                          |          |           |        |
+-------------------------------------+----------+-----------+--------+
| > • Plastic pipes or plastic        | §14      |           |        |
| > service lines which contain lead  | 1.86(g)( |           |        |
| > plasticizers, and                 | 1)(i)(A) |           |        |
+-------------------------------------+----------+-----------+--------+
| > • Lead service lines, lead pipes, | §14      |           |        |
| > lead soldered pipe joints, or     | 1.86(g)( |           |        |
| > leaded brass or bronze alloy      | 1)(i)(B) |           |        |
| > fittings and fixtures, unless     |          |           |        |
| > these fittings and fixtures meet  |          |           |        |
| > standards that are acceptable     |          |           |        |
| > under 42 U.S.C. 300g-6(e) (SDWA   |          |           |        |
| > section 1417(e)).                 |          |           |        |
+-------------------------------------+----------+-----------+--------+
| To qualify for full waiver, or for  | §        |           |        |
| partial waiver for copper, system   | 141.86(g |           |        |
| must certify that it contains no    | )(1)(ii) |           |        |
| copper pipes or copper service      |          |           |        |
| lines.                              |          |           |        |
+-------------------------------------+----------+-----------+--------+
| [Monitoring Criteria:]{.underline}  | §141.    |           |        |
|                                     | 86(g)(2) |           |        |
| System can apply for waiver after   |          |           |        |
| completing at least one 6-month     |          |           |        |
| round of standard lead and copper   |          |           |        |
| tap monitoring after becoming free  |          |           |        |
| from the lead and copper materials  |          |           |        |
| described in                        |          |           |        |
| §§141.86(g)(1)(i)-(ii).             |          |           |        |
+-------------------------------------+----------+-----------+--------+
| To qualify for full waiver, or lead | §141.86( |           |        |
| waiver, system must demonstrate     | g)(2)(i) |           |        |
| that 90^th^ percentile lead level   |          |           |        |
| does not exceed 0.005 mg/L.         |          |           |        |
+-------------------------------------+----------+-----------+--------+
| To qualify for full waiver, or      | §        |           |        |
| copper waiver, system must          | 141.86(g |           |        |
| demonstrate that 90^th^ percentile  | )(2)(ii) |           |        |
| copper level does not exceed 0.65   |          |           |        |
| mg/L.                               |          |           |        |
+-------------------------------------+----------+-----------+--------+
| • State must notify system of       | §141.    |           |        |
| waiver determination in writing, as | 86(g)(3) |           |        |
| well as any conditions of waiver.   |          |           |        |
|                                     |          |           |        |
| • As a condition of waiver, State   |          |           |        |
| may require system to perform       |          |           |        |
| specific activities to ensure that  |          |           |        |
| lead and copper contamination is    |          |           |        |
| avoided.                            |          |           |        |
|                                     |          |           |        |
| • System must continue monitoring   |          |           |        |
| for lead and copper at tap          |          |           |        |
| according to §§141.86(d)(1) through |          |           |        |
| (d)(4), as appropriate, until it    |          |           |        |
| receives written approval of waiver |          |           |        |
| from State.                         |          |           |        |
+-------------------------------------+----------+-----------+--------+

+-------------------------------------+----------+-----------+--------+
| Monitoring frequency for systems    | §141.    |           |        |
| with waivers                        | 86(g)(4) |           |        |
+=====================================+==========+===========+========+
| • System with full waiver must      | §141.86( |           |        |
| conduct lead and copper tap         | g)(4)(i) |           |        |
| monitoring at least once every 9    |          |           |        |
| years in accordance with            |          |           |        |
| requirements of §141.86(d)(4)(iv).  |          |           |        |
|                                     |          |           |        |
| • System must provide materials     |          |           |        |
| certification for both lead and     |          |           |        |
| copper to State with monitoring     |          |           |        |
| results.                            |          |           |        |
+-------------------------------------+----------+-----------+--------+
| • System with partial waiver must   | §        |           |        |
| conduct tap monitoring for waived   | 141.86(g |           |        |
| contaminant at least once every 9   | )(4)(ii) |           |        |
| years in accordance with            |          |           |        |
| requirements of §141.86(d)(4)(iv).  |          |           |        |
|                                     |          |           |        |
| • System must provide materials     |          |           |        |
| certification for waived            |          |           |        |
| contaminant to State with the       |          |           |        |
| monitoring results.                 |          |           |        |
|                                     |          |           |        |
| • System must continue to monitor   |          |           |        |
| for the non-waived contaminant      |          |           |        |
| according to §§141.86(d)(1) through |          |           |        |
| (d)(4), as appropriate.             |          |           |        |
+-------------------------------------+----------+-----------+--------+
| If system with waiver adds new      | §1       |           |        |
| source or changes treatment, it     | 41.86(g) |           |        |
| must inform State in writing within | (4)(iii) |           |        |
| 60 days of change, in accordance    |          |           |        |
| with §141.90(a)(3).                 |          |           |        |
|                                     |          |           |        |
| State may require such a system to  |          |           |        |
| add or modify waiver conditions if  |          |           |        |
| it deems necessary.                 |          |           |        |
+-------------------------------------+----------+-----------+--------+
| If system with waiver becomes aware | §        |           |        |
| that it is no longer free of        | 141.86(g |           |        |
| lead-containing or                  | )(4)(iv) |           |        |
| copper-containing materials, it     |          |           |        |
| must notify State in writing within |          |           |        |
| 60 days after becoming aware of     |          |           |        |
| change.                             |          |           |        |
+-------------------------------------+----------+-----------+--------+
| [Continued eligibility]{.underline} | §141.    |           |        |
|                                     | 86(g)(5) |           |        |
| Waiver will be renewed              |          |           |        |
| automatically, unless system no     |          |           |        |
| longer satisfies one or more of     |          |           |        |
| conditions of waiver.               |          |           |        |
|                                     |          |           |        |
| If system's waiver has been         |          |           |        |
| revoked, it may re-apply for a      |          |           |        |
| waiver once it again has met        |          |           |        |
| appropriate materials and           |          |           |        |
| monitoring criteria.                |          |           |        |
|                                     |          |           |        |
| System's waiver will be revoked if  |          |           |        |
| any of the following occur:         |          |           |        |
+-------------------------------------+----------+-----------+--------+
| > • System with full waiver or lead | §141.86( |           |        |
| > waiver no longer satisfies        | g)(5)(i) |           |        |
| > materials criteria of             |          |           |        |
| > §141.86(g)(1)(i) or has 90^th^    |          |           |        |
| > percentile lead level \> 0.005    |          |           |        |
| > mg/L.                             |          |           |        |
+-------------------------------------+----------+-----------+--------+
| > • System with full waiver or      | §        |           |        |
| > copper waiver no longer satisfies | 141.86(g |           |        |
| > materials criteria of             | )(5)(ii) |           |        |
| > §141.86(g)(1)(ii) or has 90^th^   |          |           |        |
| > percentile copper level \> 0.65   |          |           |        |
| > mg/L.                             |          |           |        |
+-------------------------------------+----------+-----------+--------+
| > • State notifies system, in       | §1       |           |        |
| > writing, that waiver has been     | 41.86(g) |           |        |
| > revoked, explaining basis of its  | (5)(iii) |           |        |
| > decision.                         |          |           |        |
+-------------------------------------+----------+-----------+--------+
| System whose full or partial waiver | §141.    |           |        |
| has been revoked by State must meet | 86(g)(6) |           |        |
| following requirements, as          |          |           |        |
| appropriate:                        |          |           |        |
+-------------------------------------+----------+-----------+--------+
| > • If system exceeds lead or       | §141.86( |           |        |
| > copper action level, it must      | g)(6)(i) |           |        |
| > follow the deadlines toward       |          |           |        |
| > completing optimal corrosion      |          |           |        |
| > control treatment according to    |          |           |        |
| > §141.81(e), and implement any     |          |           |        |
| > other applicable requirements.    |          |           |        |
+-------------------------------------+----------+-----------+--------+
| > • If system meets both action     | §        |           |        |
| > levels, it must resume lead and   | 141.86(g |           |        |
| > copper tap monitoring at least    | )(6)(ii) |           |        |
| > once every 3 years at reduced     |          |           |        |
| > number of sites.                  |          |           |        |
+-------------------------------------+----------+-----------+--------+
| [Pre-existing waivers]{.underline}  | §141.    |           |        |
|                                     | 86(g)(7) |           |        |
| Small system waivers approved by    |          |           |        |
| State in writing prior to April 11, |          |           |        |
| 2000 will remain in effect under    |          |           |        |
| following conditions:               |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  If system has demonstrated that | §141.86( |           |        |
|     it is both free of              | g)(7)(i) |           |        |
|     lead-containing and             |          |           |        |
|     copper-containing materials and |          |           |        |
|     that its 90^th^ percentile lead |          |           |        |
|     and copper levels meet waiver   |          |           |        |
|     monitoring criteria, waiver     |          |           |        |
|     remains in effect so long as    |          |           |        |
|     system continues to meet waiver |          |           |        |
|     eligibility criteria of         |          |           |        |
|     §141.86(g)(5).                  |          |           |        |
|                                     |          |           |        |
| 2.  First round of tap water        |          |           |        |
|     monitoring conducted according  |          |           |        |
|     to §141.86(g)(4) must be        |          |           |        |
|     completed no later than 9 years |          |           |        |
|     after the last time system has  |          |           |        |
|     monitored for lead and copper   |          |           |        |
|     at tap.                         |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 3.  If system has met materials     | §        |           |        |
|     criteria of §141.86(g)(1) but   | 141.86(g |           |        |
|     not the monitoring criteria of  | )(7)(ii) |           |        |
|     §141.86(g)(2), it must conduct  |          |           |        |
|     a round of monitoring for lead  |          |           |        |
|     and copper at tap demonstrating |          |           |        |
|     that it meets criteria of       |          |           |        |
|     §141.86(g)(2) no later than     |          |           |        |
|     September 30, 2000.             |          |           |        |
|                                     |          |           |        |
| 4.  Thereafter, the waiver will     |          |           |        |
|     remain in effect as long as     |          |           |        |
|     system meets continued          |          |           |        |
|     eligibility criteria of         |          |           |        |
|     §141.86(g)(5).                  |          |           |        |
|                                     |          |           |        |
| 5.  First round of tap water        |          |           |        |
|     monitoring conducted according  |          |           |        |
|     to §141.86(g)(4) must be        |          |           |        |
|     completed no later than 9 years |          |           |        |
|     after round of monitoring       |          |           |        |
|     conducted according to          |          |           |        |
|     §141.86(g)(2).                  |          |           |        |
+-------------------------------------+----------+-----------+--------+
| **[§141.87 Monitoring Requirements  |          |           |        |
| For Water Quality                   |          |           |        |
| Parameters]{.smallcaps}**           |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  Specifies that all large        | §141.87  |           |        |
|     systems must conduct WQP        | intr     |           |        |
|     monitoring, not just those that | oductory |           |        |
|     exceed action level.            | text     |           |        |
|     *(Technical Correction, June    |          |           |        |
|     30, 1994)*                      |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Adds language which conforms to     | §        |           |        |
| §141.87(c)(3), explaining that      | 141.87(a |           |        |
| certain groundwater systems do not  | )(2)(ii) |           |        |
| have to sample at every entry point |          |           |        |
| to distribution system.             |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Adds language which conforms to     | §141.    |           |        |
| §141.87(c)(3), explaining that      | 87(c)(2) |           |        |
| certain groundwater systems do not  |          |           |        |
| have to sample at every entry point |          |           |        |
| to distribution system when         |          |           |        |
| conducting follow-up monitoring.    |          |           |        |
|                                     |          |           |        |
| *\*Clarification\*:* Systems must   |          |           |        |
| collect at least one sample no less |          |           |        |
| frequently than every 2 weeks.      |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  Groundwater system can limit    | §141.    |           |        |
|     entry point WQP sampling to     | 87(c)(3) |           |        |
|     entry points that are           |          |           |        |
|     representative of water quality |          |           |        |
|     and treatment conditions        |          |           |        |
|     throughout system.              |          |           |        |
|                                     |          |           |        |
| ```{=html}                          |          |           |        |
| <!-- -->                            |          |           |        |
| ```                                 |          |           |        |
| 1.  If water from untreated ground  |          |           |        |
|     water sources mixes with water  |          |           |        |
|     from treated ground water       |          |           |        |
|     sources, systems must monitor   |          |           |        |
|     for WQPs both at representative |          |           |        |
|     entry points receiving          |          |           |        |
|     treatment and representative    |          |           |        |
|     entry points receiving no       |          |           |        |
|     treatment.                      |          |           |        |
|                                     |          |           |        |
| ```{=html}                          |          |           |        |
| <!-- -->                            |          |           |        |
| ```                                 |          |           |        |
| 1.  Before monitoring, systems must |          |           |        |
|     provide to State in writing     |          |           |        |
|     identification of selected      |          |           |        |
|     entry points and documentation  |          |           |        |
|     that demonstrates sites are     |          |           |        |
|     representative of water quality |          |           |        |
|     and treatment conditions        |          |           |        |
|     throughout entire system.       |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  Systems must determine          | §1       |           |        |
|     compliance with State-specified | 41.87(d) |           |        |
|     WQP values every 6 months with  |          |           |        |
|     the first 6-month period        |          |           |        |
|     beginning on the date State     |          |           |        |
|     specifies optimal WQPs.         |          |           |        |
|                                     |          |           |        |
| ```{=html}                          |          |           |        |
| <!-- -->                            |          |           |        |
| ```                                 |          |           |        |
| 1.  Deletes language regarding      |          |           |        |
|     confirmation samples.           |          |           |        |
|                                     |          |           |        |
| ```{=html}                          |          |           |        |
| <!-- -->                            |          |           |        |
| ```                                 |          |           |        |
| 1.  If any small or medium-size     |          |           |        |
|     system is on reduced monitoring |          |           |        |
|     when it exceeds either action   |          |           |        |
|     level, the end of the 6-month   |          |           |        |
|     period for WQP monitoring will  |          |           |        |
|     coincide with the end of the    |          |           |        |
|     applicable monitoring period    |          |           |        |
|     under §141.86(d)(4).            |          |           |        |
|                                     |          |           |        |
| ```{=html}                          |          |           |        |
| <!-- -->                            |          |           |        |
| ```                                 |          |           |        |
| 1.  Compliance with                 |          |           |        |
|     State-designated OWQPs must be  |          |           |        |
|     determined as specified under   |          |           |        |
|     §141.82(g).                     |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Specifies that systems that         | §141.87( |           |        |
| maintain State-specified WQPs in    | e)(2)(i) |           |        |
| distribution system for 3           |          |           |        |
| consecutive years can reduce WQP    | *        |           |        |
| monitoring from annually to         | formerly |           |        |
| triennially. *(Technical            | §141.8   |           |        |
| Correction, June 29, 1992)*         | 7(e)(2)* |           |        |
+-------------------------------------+----------+-----------+--------+
| Systems may reduce frequency of tap | §        |           |        |
| monitoring for WQPs to every 3      | 141.87(e |           |        |
| years if they demonstrate for 2     | )(2)(ii) |           |        |
| consecutive monitoring periods      |          |           |        |
| that:                               |          |           |        |
|                                     |          |           |        |
| > • 90^th^ percentile lead level at |          |           |        |
| > tap is [\<]{.underline} the PQL   |          |           |        |
| > for lead,                         |          |           |        |
| >                                   |          |           |        |
| > • 90^th^ percentile copper level  |          |           |        |
| > at tap is [\<]{.underline} 0.65   |          |           |        |
| > mg/L, and                         |          |           |        |
| >                                   |          |           |        |
| > • they maintain range of values   |          |           |        |
| > for WQPs reflecting optimal       |          |           |        |
| > corrosion control treatment.      |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  System on reduced monitoring    | §141.    |           |        |
|     that fails to operate according | 87(e)(4) |           |        |
|     to State-specified values for   |          |           |        |
|     WQPs for more than 9 days in    |          |           |        |
|     6-month monitoring period must  |          |           |        |
|     resume monitoring for each WQP  |          |           |        |
|     at tap at standard number and   |          |           |        |
|     frequency.                      |          |           |        |
|                                     |          |           |        |
| ```{=html}                          |          |           |        |
| <!-- -->                            |          |           |        |
| ```                                 |          |           |        |
| 1.  System may resume annual        |          |           |        |
|     monitoring for WQPs at tap at   |          |           |        |
|     reduced number of sites         |          |           |        |
|     specified in §141.87(e)(1)      |          |           |        |
|     after it has completed 2        |          |           |        |
|     subsequent consecutive 6-month  |          |           |        |
|     rounds of monitoring that meet  |          |           |        |
|     criteria of that paragraph.     |          |           |        |
|                                     |          |           |        |
| ```{=html}                          |          |           |        |
| <!-- -->                            |          |           |        |
| ```                                 |          |           |        |
| 1.  Such a system may resume        |          |           |        |
|     triennial monitoring for WQPs   |          |           |        |
|     at tap at reduced number of     |          |           |        |
|     sites after it demonstrates     |          |           |        |
|     through subsequent rounds of    |          |           |        |
|     monitoring that it meets        |          |           |        |
|     criteria of either              |          |           |        |
|     §§141.87(e)(2)(i) or            |          |           |        |
|     141.87(e)(2)(ii).               |          |           |        |
|                                     |          |           |        |
| ```{=html}                          |          |           |        |
| <!-- -->                            |          |           |        |
| ```                                 |          |           |        |
| 1.  Corrects a reference: Systems   |          |           |        |
|     on reduced monitoring that fail |          |           |        |
|     to operate according to         |          |           |        |
|     State-specified WQPs must       |          |           |        |
|     resume monitoring according to  |          |           |        |
|     §141.87(d), not §141.87(c).     |          |           |        |
|     *(Technical Correction, June    |          |           |        |
|     29, 1992)*                      |          |           |        |
+-------------------------------------+----------+-----------+--------+
| **[§141.88 Monitoring Requirements  |          |           |        |
| For Lead and Copper in Source       |          |           |        |
| Water]{.smallcaps}**                |          |           |        |
+-------------------------------------+----------+-----------+--------+
| **Note:** The requirements for      |          |           |        |
| source water sample location,       |          |           |        |
| number of source water samples, and |          |           |        |
| collection methods have been        |          |           |        |
| incorporated directly into          |          |           |        |
| §141.88(a)(1) and the reference to  |          |           |        |
| §§141.23(a)(1)-(4) have been        |          |           |        |
| eliminated.                         |          |           |        |
+-------------------------------------+----------+-----------+--------+
| > The information contained in:     | Is now   |           |        |
| >                                   | found    |           |        |
| > • §141.23(a)(1)                   | in:      |           |        |
| >                                   |          |           |        |
| > • §141.23(a)(2)                   | •        |           |        |
| >                                   | §141.88( |           |        |
| > • §141.23(a)(3)                   | a)(1)(i) |           |        |
|                                     |          |           |        |
|                                     | •        |           |        |
|                                     | §        |           |        |
|                                     | 141.88(a |           |        |
|                                     | )(1)(ii) |           |        |
|                                     |          |           |        |
|                                     | •        |           |        |
|                                     | §§1      |           |        |
|                                     | 41.88(a) |           |        |
|                                     | (1)(iii) |           |        |
+-------------------------------------+----------+-----------+--------+
| Systems may composite samples from  | §        |           |        |
| a maximum of 5 samples, provided    | 141.88(a |           |        |
| that                                | )(1)(iv) |           |        |
|                                     |          |           |        |
| Compositing is done by certified    | *        |           |        |
| lab personnel; and                  | formerly |           |        |
|                                     | c        |           |        |
| If composite sample has lead level  | ontained |           |        |
| [\>]{.underline} 0.001 mg/L or      | in       |           |        |
| copper level [\>]{.underline} 0.160 | §141.2   |           |        |
| mg/L, then either:                  | 3(a)(4)* |           |        |
|                                     |          |           |        |
| 1.  A follow-up sample can be taken |          |           |        |
|     and analyzed within 14 days at  |          |           |        |
|     each sampling point included in |          |           |        |
|     the composite; or               |          |           |        |
|                                     |          |           |        |
| 2.  If duplicates of or sufficient  |          |           |        |
|     quantities from the original    |          |           |        |
|     samples from each sampling      |          |           |        |
|     point used in the composite are |          |           |        |
|     available, the system may use   |          |           |        |
|     these instead of resampling.    |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  Corrects a reference in this    | §1       |           |        |
|     paragraph: the requirement to   | 41.88(c) |           |        |
|     install source water treatment  |          |           |        |
|     is contained in §141.83(a)(3),  |          |           |        |
|     not §141.83(a)(2). *(Technical  |          |           |        |
|     Correction, June 29, 1992)*     |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Systems using ground water may      | §141.    |           |        |
| reduce source water sampling to     | 88(e)(1) |           |        |
| once in every 9-year compliance     |          |           |        |
| cycle if:                           |          |           |        |
+-------------------------------------+----------+-----------+--------+
| > • System maintains lead and       | §141.88( |           |        |
| > copper levels in water entering   | e)(1)(i) |           |        |
| > distribution system below maximum |          |           |        |
| > permissible concentrations        |          |           |        |
| > specified by State for at least 3 |          |           |        |
| > consecutive compliance periods;   |          |           |        |
| > or                                |          |           |        |
+-------------------------------------+----------+-----------+--------+
| > • State determines that source    | §        |           |        |
| > water treatment is not needed,    | 141.88(e |           |        |
| > and                               | )(1)(ii) |           |        |
| >                                   |          |           |        |
| > • System maintains lead level     |          |           |        |
| > [\<]{.underline} 0.005 mg/L in    |          |           |        |
| > source water, and copper level    |          |           |        |
| > [\<]{.underline} 0.65 mg/L in     |          |           |        |
| > source water, for at least 3      |          |           |        |
| > consecutive compliance periods.   |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  Corrects a reference in this    | §141.    |           |        |
|     paragraph: the definition of    | 88(e)(2) |           |        |
|     "9-year compliance cycle" is    |          |           |        |
|     contained in §141.2, not        |          |           |        |
|     §141.23. *(Technical            |          |           |        |
|     Correction, June 29, 1992)*     |          |           |        |
|                                     |          |           |        |
| ```{=html}                          |          |           |        |
| <!-- -->                            |          |           |        |
| ```                                 |          |           |        |
| 1.  Systems using surface water (or |          |           |        |
|     combination of surface water    |          |           |        |
|     and ground water) may reduce    |          |           |        |
|     source water sampling to once   |          |           |        |
|     in every 9-year compliance      |          |           |        |
|     cycle if:                       |          |           |        |
+-------------------------------------+----------+-----------+--------+
| > -System maintains lead and copper | §141.88( |           |        |
| > levels in water entering          | e)(2)(i) |           |        |
| > distribution system below maximum |          |           |        |
| > permissible concentrations        |          |           |        |
| > specified by State for at least 3 |          |           |        |
| > consecutive years; or             |          |           |        |
+-------------------------------------+----------+-----------+--------+
| > -State determines source water    | §        |           |        |
| > treatment not needed, and         | 141.88(e |           |        |
| >                                   | )(2)(ii) |           |        |
| > -System maintains source water    |          |           |        |
| > lead level [\<]{.underline} 0.005 |          |           |        |
| > mg/L, and source water copper     |          |           |        |
| > level [\<]{.underline} 0.65 mg/L, |          |           |        |
| > for at least 3 consecutive years. |          |           |        |
+-------------------------------------+----------+-----------+--------+
| [**§141.89** **Analytical           |          |           |        |
| Methods**]{.smallcaps}              |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  Specifies that the lead PQL is  | §        |           |        |
|     0.005 mg/L and the copper PQL   | 141.89(a |           |        |
|     is 0.050 mg/L. *(Technical      | )(1)(ii) |           |        |
|     Correction, June 30, 1994)*     |          |           |        |
+-------------------------------------+----------+-----------+--------+
| • Eliminates requirement that labs  | §1       |           |        |
| achieve the copper method detection | 41.89(a) |           |        |
| limit in order to accept composite  | (1)(iii) |           |        |
| samples.                            |          |           |        |
|                                     |          |           |        |
| • Deletes paragraphs                |          |           |        |
| §141.89(a)(1)(iii)(A) and (B) since |          |           |        |
| they are no longer necessary.       |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Revises §141.89(a)(3) to            | §141.    |           |        |
| consolidate §§141.89(a)(3) and (4)  | 89(a)(3) |           |        |
| and to reference the lead and       |          |           |        |
| copper PQLs defined in              |          |           |        |
| §141.89(a)(1)(ii). *(Technical      |          |           |        |
| Correction, June 30, 1994*)         |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Corrects an error in the            | §141.    |           |        |
| identification of one-half the      | 89(a)(4) |           |        |
| copper PQL: this value should be    |          |           |        |
| 0.025 mg/L, not 0.015 mg/L.         |          |           |        |
| *(Technical Correction, June 29,    |          |           |        |
| 1992)*                              |          |           |        |
+-------------------------------------+----------+-----------+--------+

+-------------------------------------+----------+-----------+--------+
| **[§141.90 Reporting                |          |           |        |
| Requirements]{.smallcaps}**         |          |           |        |
+=====================================+==========+===========+========+
| Except as provided in               | §141.    |           |        |
| §141.90(a)(1)(viii), systems must   | 90(a)(1) |           |        |
| report information specified in     |          |           |        |
| §141.90 for all lead and copper tap |          |           |        |
| samples and WQP samples specified   |          |           |        |
| in §141.87 within first 10 days     |          |           |        |
| after end of each monitoring        |          |           |        |
| period.                             |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Deletes requirement for systems to  | §        |           |        |
| certify that all samples are        | 141.90(a |           |        |
| first-draw. This is replaced by     | )(1)(ii) |           |        |
| requirement for systems to submit   |          |           |        |
| documentation to State for each     |          |           |        |
| lead or copper tap sample for which |          |           |        |
| they request invalidation.          |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Deletes requirement for systems to  | §1       |           |        |
| certify that residents collected    | 41.90(a) |           |        |
| samples after system had informed   | (1)(iii) |           |        |
| them of the proper sampling         |          |           |        |
| procedures.                         |          |           |        |
|                                     |          |           |        |
| \[Note: EPA has added no new        |          |           |        |
| requirements to this paragraph.\]   |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Systems do not have to submit       | §        |           |        |
| 90^th^ percentile concentrations if | 141.90(a |           |        |
| State calculates 90^th^ percentile  | )(1)(iv) |           |        |
| levels for system.                  |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Systems must now report results of  | §14      |           |        |
| all WQP samples collected under     | 1.90(a)( |           |        |
| §141.87(c)-(f) during each          | 1)(viii) |           |        |
| six-month monitoring period         |          |           |        |
| specified in §141.87(d) within      |          |           |        |
| first 10 days following end of      |          |           |        |
| monitoring period unless State has  |          |           |        |
| specified more frequent reporting   |          |           |        |
| requirement.                        |          |           |        |
+-------------------------------------+----------+-----------+--------+
| • Deletes requirement that CWSs     | §141.    |           |        |
| justify their selection of tier 2   | 90(a)(2) |           |        |
| and/or tier 3 sites.                |          |           |        |
|                                     |          |           |        |
| • NTNCWSs and special-case CWSs     |          |           |        |
| that do not have enough taps to     |          |           |        |
| supply first-draw samples must      |          |           |        |
| either:                             |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  Provide written documentation   | §141.90( |           |        |
|     to State identifying standing   | a)(2)(i) |           |        |
|     times and locations for enough  |          |           |        |
|     non-first-draw samples to make  |          |           |        |
|     up sampling pool under          |          |           |        |
|     §141.86(b)(5) by the start of   |          |           |        |
|     the monitoring period, unless   |          |           |        |
|     State has waived prior approval |          |           |        |
|     of non-first-draw sample sites  |          |           |        |
|     selected by system; or          |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  If State has waived prior       | §        |           |        |
|     approval of non-first-draw      | 141.90(a |           |        |
|     sample sites selected by        | )(2)(ii) |           |        |
|     system, include with the lead   |          |           |        |
|     and copper tap results a        |          |           |        |
|     written identification of each  |          |           |        |
|     site that did not meet 6-hour   |          |           |        |
|     minimum standing time, and      |          |           |        |
|     length of standing time for the |          |           |        |
|     substitute sample.              |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Deletes requirement that NTNCWSs    | §141.    |           |        |
| justify their selection of non-tier | 90(a)(3) |           |        |
| 1 sites.                            |          |           |        |
|                                     |          |           |        |
| Systems on reduced lead and copper  |          |           |        |
| tap monitoring, granted monitoring  |          |           |        |
| waiver, or that are deemed to have  |          |           |        |
| optimized corrosion control must    |          |           |        |
| describe any addition of new source |          |           |        |
| or change in treatment to State in  |          |           |        |
| writing within 60 days of change.   |          |           |        |
|                                     |          |           |        |
| If prior State approval of          |          |           |        |
| treatment change or new source is   |          |           |        |
| not required, systems are           |          |           |        |
| encouraged to notify State before   |          |           |        |
| making the change to minimize the   |          |           |        |
| risk that the treatment change or   |          |           |        |
| new source may adversely affect     |          |           |        |
| optimal corrosion control.          |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  Systems no longer have to       | §141.    |           |        |
|     justify to State why they are   | 90(a)(4) |           |        |
|     unable to find sufficient       |          |           |        |
|     number of sites served by lead  |          |           |        |
|     service lines.                  |          |           |        |
|                                     |          |           |        |
| ```{=html}                          |          |           |        |
| <!-- -->                            |          |           |        |
| ```                                 |          |           |        |
| 1.  Small systems applying for      |          |           |        |
|     monitoring waiver, or that are  |          |           |        |
|     subject to waiver under         |          |           |        |
|     §141.86(g)(3), must provide     |          |           |        |
|     following information to State  |          |           |        |
|     in writing by specified         |          |           |        |
|     deadline:                       |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 2.  By start of first applicable    | §141.90( |           |        |
|     monitoring period in            | a)(4)(i) |           |        |
|     §141.86(d), any small system    |          |           |        |
|     applying for waiver must        |          |           |        |
|     provide documentation that      |          |           |        |
|     demonstrates that it meets      |          |           |        |
|     waiver criteria of              |          |           |        |
|     §§141.86(g)(1) and (2).         |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 3.  No later than nine years after  | §        |           |        |
|     monitoring previously conducted | 141.90(a |           |        |
|     according to §141.86(g)(2) or   | )(4)(ii) |           |        |
|     §141.86(g)(4)(i), each small    |          |           |        |
|     system desiring to maintain     |          |           |        |
|     monitoring waiver must provide  |          |           |        |
|     information required by         |          |           |        |
|     §§141.86(g)(4)(i) and (ii).     |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  No later than 60 days after it  | §1       |           |        |
|     becomes aware that it is no     | 41.90(a) |           |        |
|     longer free of lead-containing  | (4)(iii) |           |        |
|     and/or copper-containing        |          |           |        |
|     materials, system with waiver   |          |           |        |
|     must notify State in writing,   |          |           |        |
|     explaining circumstances        |          |           |        |
|     resulting in lead-containing    |          |           |        |
|     and/or copper-containing        |          |           |        |
|     materials being introduced into |          |           |        |
|     system and what corrective      |          |           |        |
|     action, if any, system plans to |          |           |        |
|     remove these materials.         |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 2.  By October 10, 2000, any small  | §        |           |        |
|     system with waiver granted      | 141.90(a |           |        |
|     prior to April 11, 2000 and     | )(4)(iv) |           |        |
|     that has not previously met     |          |           |        |
|     requirements of §141.86(g)(2)   |          |           |        |
|     must provide information        |          |           |        |
|     required by that paragraph.     |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 3.  Deletes requirement for systems | §141.    |           |        |
|     to formally request to State    | 90(a)(5) |           |        |
|     that they be allowed to go to   |          |           |        |
|     reduced monitoring.             |          |           |        |
|                                     |          |           |        |
| 4.  Groundwater systems that limit  |          |           |        |
|     WQP monitoring to subset of     |          |           |        |
|     entry points under              |          |           |        |
|     §141.87(c)(3) must, before such |          |           |        |
|     monitoring begins, provide to   |          |           |        |
|     State in writing:               |          |           |        |
|                                     |          |           |        |
|     1.  identification of selected  |          |           |        |
|         entry points, and           |          |           |        |
|                                     |          |           |        |
|     2.  information which           |          |           |        |
|         demonstrates that sites are |          |           |        |
|         representative of water     |          |           |        |
|         quality and treatment       |          |           |        |
|         conditions throughout       |          |           |        |
|         system.                     |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  Corrects a reference in this    | §141.    |           |        |
|     paragraph: systems should       | 90(c)(1) |           |        |
|     report corrosion control        |          |           |        |
|     treatment information found in  |          |           |        |
|     §141.81(b)(2) or (3), not       |          |           |        |
|     §141.82(b)(2) or (3).           |          |           |        |
|     *(Technical Correction, June    |          |           |        |
|     29, 1992)*                      |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Changes the reference "§141.84(f)"  | §141.90( |           |        |
| to "§141.84(e)" to be consistent    | e)(2)(i) |           |        |
| with the Minor Revisions.           |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Corrects a reference in this        | §        |           |        |
| paragraph: reference should be to   | 141.90(e |           |        |
| §141.84(c) rather than §141.84(b).  | )(2)(ii) |           |        |
| *(Technical Correction, June 29,    |          |           |        |
| 1992)*                              |          |           |        |
|                                     |          |           |        |
| Changes the reference "§141.84(f)"  |          |           |        |
| to "§141.84(e)" to be consistent    |          |           |        |
| with the Minor Revisions.           |          |           |        |
+-------------------------------------+----------+-----------+--------+
| 1.  Deletes requirement for systems | §141.    |           |        |
|     to submit documentation to      | 90(e)(4) |           |        |
|     State if system believes it     |          |           |        |
|     does not control entire length  |          |           |        |
|     of LSL.                         |          |           |        |
|                                     |          |           |        |
| Replaced by partial LSL reporting   |          |           |        |
| requirements:                       |          |           |        |
|                                     |          |           |        |
| > Systems which collect LSL samples |          |           |        |
| > after partial lead service line   |          |           |        |
| > replacement must report results   |          |           |        |
| > to State within first 10 days of  |          |           |        |
| > month following month in which    |          |           |        |
| > system receives results, or as    |          |           |        |
| > specified by State. States can    |          |           |        |
| > eliminate this requirement at     |          |           |        |
| > their discretion.                 |          |           |        |
| >                                   |          |           |        |
| > States can also require systems   |          |           |        |
| > to report additional information  |          |           |        |
| > to verify that systems have       |          |           |        |
| > completed all partial lead        |          |           |        |
| > service line replacement          |          |           |        |
| > activities.                       |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Systems must submit written         | §        |           |        |
| documentation to State              | §141.90( |           |        |
| demonstrating that they have met    | f)(1)(i) |           |        |
| public education requirements       | & (ii)   |           |        |
| within 10 days after end of each    |          |           |        |
| period in which systems are         |          |           |        |
| required to perform public          |          |           |        |
| education tasks.                    |          |           |        |
+-------------------------------------+----------+-----------+--------+
| If system certifies that public     | §141.    |           |        |
| education materials have been       | 90(f)(2) |           |        |
| distributed to same list as         |          |           |        |
| submitted previously, it need no    |          |           |        |
| longer resubmit information         |          |           |        |
| required in §141.90(f)(1)(ii) to    |          |           |        |
| State, as long as there have been   |          |           |        |
| no changes in the list. State can   |          |           |        |
| require system to resubmit this     |          |           |        |
| information.                        |          |           |        |
+-------------------------------------+----------+-----------+--------+
| Corrects paragraph to require       | §1       |           |        |
| systems submitting additional data  | 41.90(g) |           |        |
| to State to submit such data within |          |           |        |
| 10 days after end of monitoring     |          |           |        |
| period, rather than by end of       |          |           |        |
| reporting period. *(Technical       |          |           |        |
| Correction, June 30, 1994)*         |          |           |        |
+-------------------------------------+----------+-----------+--------+
| • Allows States to calculate 90^th^ | §1       |           |        |
| percentile values for systems.      | 41.90(h) |           |        |
|                                     |          |           |        |
| • A system is not required to       |          |           |        |
| report 90^th^ percentile levels to  |          |           |        |
| State if:                           |          |           |        |
+-------------------------------------+----------+-----------+--------+
| > • State notifies system that it   | §141.    |           |        |
| > will calculate system's 90^th^    | 90(h)(1) |           |        |
| > percentile levels and specifies a |          |           |        |
| > date before end of monitoring     |          |           |        |
| > period by which system must       |          |           |        |
| > provide these results in writing; |          |           |        |
| > and                               |          |           |        |
+-------------------------------------+----------+-----------+--------+

+-------------------------------------+----------+-----------+--------+
| > • System provides following       | §141.    |           |        |
| > information to State by date      | 90(h)(2) |           |        |
| > specified in §141.90(h)(1):       |          |           |        |
+=====================================+==========+===========+========+
| > -results of all lead and copper   | §141.90( |           |        |
| > tap samples, including location   | h)(2)(i) |           |        |
| > of each site and criteria of      |          |           |        |
| > selection for each site; and      |          |           |        |
+-------------------------------------+----------+-----------+--------+
| > -identification of sampling sites | §        |           |        |
| > used during current monitoring    | 141.90(h |           |        |
| > period that were not sampled      | )(2)(ii) |           |        |
| > during previous monitoring        |          |           |        |
| > periods, and explanation why      |          |           |        |
| > sampling sites have changed; and  |          |           |        |
+-------------------------------------+----------+-----------+--------+
| > • State has provided results of   | §141.    |           |        |
| > 90^th^ percentile calculations,   | 90(h)(3) |           |        |
| > in writing, to system before end  |          |           |        |
| > of monitoring period.             |          |           |        |
+-------------------------------------+----------+-----------+--------+
| **[§141.91 Recordkeeping            |          |           |        |
| Requirements]{.smallcaps}** -       |          |           |        |
| ***There were no revisions to this  |          |           |        |
| section.***                         |          |           |        |
+-------------------------------------+----------+-----------+--------+