Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 611 - PRIMARY DRINKING WATER STANDARDS › Subpart AG - INTERIM LEAD AND COPPER RULES › Appendix G - NPDWR Violations and Situations Requiring Public Notice

Current through Register Vol. 48, No. 28, July 12, 2024
See note 1 at the end of this Appendix G for an explanation
				  of the Agency's authority to alter the magnitude of a violation from that set
				  forth in the following table.
MCL/MRDL/TT
							 violations2
Monitoring and testing procedure
							 violations
Contaminant
Tier of public notice required
Citation
Tier of public notice required
Citation
I. Violations of National Primary Drinking Water Regulations
				  (NPDWR):3
A. Microbiological Contaminants
1a. Corresponding row 1a in appendix A to subpart Q
							 to 40 CFR
							 141 no longer applies by its own terms. This
							 statement maintains structural consistency with the federal regulations.
1b. Total coliform (TT violations resulting from
							 failure to perform assessments or corrective actions, monitoring violations,
							 and reporting violations)
2
611.1060(b)(1)
3
611.1060(c)(1)
													611.1060(d)(1)
1c. Seasonal system failure to follow State-approved
							 start-up plan prior to serving water to the public or failure to provide
							 certification to the Agency
2
611.1060(b)(2)
3
611.1060(d)(3)
2a. Corresponding row 2a in appendix A to subpart Q
							 to 40 CFR
							 141 no longer applies by its own terms. This
							 statement maintains structural consistency with the federal regulations.
2b. E. coli (MCL, monitoring, and reporting
							 violations)
1
611.1060(a)
3
611.1060(c),
							 611.1060(d)(2)
2c. E. coli (TT violations resulting from failure to
							 perform Level 2 assessments or corrective action)
2
611.1060(b)(1)
3. This entry relates to the obsolete MCL for
							 turbidity in 40 CFR
							 141.13 that does not apply to any supplier in
							 Illinois. This statement maintains structural consistency with the
							 corresponding USEPA rule.
4. This entry relates to the obsolete MCL for
							 turbidity in 40 CFR
							 141.13 that does not apply to any supplier in
							 Illinois. This statement maintains structural consistency with the
							 corresponding USEPA rule.
5. Turbidity (for TT violations resulting from a
							 single exceedance of maximum allowable turbidity level)
6 2, 1
611.231(b),
							 611.233(b)(1),
							 611.250(a)(2),
							 611.250(b)(2),
							 611.250(c)(2),
							 611.250(d),
							 611.743(a)(2),
							 611.743(b),
							 611.955(b)(2)
3
611.531(a),
							 611.532(b),
							 611.533(a),
							 611.744, 611.956(a)(1)-(a)(3),
							 611.956(b)
6. Surface Water Treatment Rule violations, other
							 than violations resulting from single exceedance of max. allowable turbidity
							 level (TT)
2
611.211,
							 611.213,
							 611.220,
							 611.230 -611.233,
							 611.240-611.242, 611.250
3
611.531-611.533
7. Interim Enhanced Surface Water Treatment Rule
							 violations, other than violations resulting from single exceedance of max.
							 turbidity level (TT)
2
7
													611.740 -611.743,
							 611.950-611.955
3
611.742, 611.744, 611.953,
							 611.954, 611.956
8. Filter Backwash Recycling Rule violations
2
611.276(c)
3
611.276(b), (d)
9. Long Term 1 Enhanced Surface Water Treatment Rule
							 violations
2
611.950 -611.955
3
611.953,
							 611.954,
							 611.956
10. LT2ESWTR violations
2
611.1010 -611.1020
19 2, 3
611.1001 -611.1005 and
							 611.1008-611.1009
11. Groundwater Rule violations
2
611.804
3
611.802(h)
B. Inorganic Chemicals (IOCs)
1. Antimony
2
611.301(b)
3
611.600,
							 611.601,
							 611.603
2. Arsenic
2
611.301(b)
3
611.601, 611.603
3. Asbestos (fibers greater than 10 µm)
2
611.301(b)
3
611.600, 611.601, 611.602
4. Barium
2
611.301(b)
3
611.600, 611.601, 611.603
5. Beryllium
2
611.301(b)
3
611.600, 611.601, 611.603
6. Cadmium
2
611.301(b)
3
611.600, 611.601, 611.603
7. Chromium (total)
2
611.301(b)
3
611.600, 611.601, 611.603
8. Cyanide
2
611.301(b)
3
611.600, 611.601, 611.603
9. Fluoride
2
611.301(b)
3
611.600, 611.601, 611.603
10. Mercury (inorganic)
2
611.301(b)
3
611.600, 611.601, 611.603
11. Nitrate
1
611.301(b)
8 1, 3
611.600, 611.601, 611.604, 611.606
12. Nitrite
1
611.301(b)
8 1, 3
611.600, 611.601, 611.605, 611.606
13. Total Nitrate and Nitrite
1
611.301(b)
3
611.600, 611.601
14. Selenium
2
611.301(b)
3
611.600, 611.601, 611.603
15. Thallium
2
611.301(b)
3
611.600, 611.601, 611.603
C. Lead and Copper Rule (Action Level for lead is
				  0.015 mg/L, for copper is
				  1.3 mg/L)
1. Lead and Copper Rule (TT)
2
611.350 (except
							 611.350(c))-611.354,
							 611.355(a)-(c) and (h), and 611.363
3
611.356 -611.360
2. Exceeding the lead action level
1
611.350(c)
D. Synthetic Organic Chemicals (SOCs)
1. 2,4-D
2
611.311(c)
3
611.648
2. 2,4,5-TP (silvex)
2
611.311(c)
3
611.648
3. Alachlor
2
611.311(c)
3
611.648
4. Atrazine
2
611.311(c)
3
611.648
5. Benzo(a)pyrene (PAHs)
2
611.311(c)
3
611.648
6. Carbofuran
2
611.311(c)
3
611.648
7. Chlordane
2
611.311(c)
3
611.648
8. Dalapon
2
611.311(c)
3
611.648
9. Di(2-ethylhexyl)adipate
2
611.311(c)
3
611.648
10. Di(2-ethylhexyl)phthalate
2
611.311(c)
3
611.648
11. Dibromochloropropane (DBCP)
2
611.311(c)
3
611.648
12. Dinoseb
2
611.311(c)
3
611.648
13. Dioxin (2,3,7,8-TCDD)
2
611.311(c)
3
611.648
14. Diquat
2
611.311(c)
3
611.648
15. Endothall
2
611.311(c)
3
611.648
16. Endrin
2
611.311(c)
3
611.648
17. Ethylene dibromide
2
611.311(c)
3
611.648
18. Glyphosate
2
611.311(c)
3
611.648
19. Heptachlor
2
611.311(c)
3
611.648
20. Heptachlor epoxide
2
611.311(c)
3
611.648
21. Hexachlorobenzene
2
611.311(c)
3
611.648
22. Hexachlorocyclopentadiene
2
611.311(c)
3
611.648
23. Lindane
2
611.311(c)
3
611.648
24. Methoxychlor
2
611.311(c)
3
611.648
25. Oxamyl (Vydate)
2
611.311(c)
3
611.648
26. Pentachlorophenol
2
611.311(c)
3
611.648
27. Picloram
2
611.311(c)
3
611.648
28. Polychlorinated biphenyls (PCBs)
2
611.311(c)
3
611.648
29. Simazine
2
611.311(c)
3
611.648
30. Toxaphene
2
611.311(c)
3
611.648
E. Volatile Organic Chemicals (VOCs)
1. Benzene
2
611.311(a)
3
611.646
2. Carbon tetrachloride
2
611.311(a)
3
611.646
3. Chlorobenzene (monochlorobenzene)
2
611.311(a)
3
611.646
4. o-Dichlorobenzene
2
611.311(a)
3
611.646
5. p-Dichlorobenzene
2
611.311(a)
3
611.646
6. 1,2-Dichloroethane
2
611.311(a)
3
611.646
7. 1,1-Dichloroethylene
2
611.311(a)
3
611.646
8. cis-1,2-Dichloroethylene
2
611.311(a)
3
611.646
9. trans-1,2-Dichloroethylene
2
611.311(a)
3
611.646
10. Dichloromethane
2
611.311(a)
3
611.646
11. 1,2-Dichloropropane
2
611.311(a)
3
611.646
12. Ethylbenzene
2
611.311(a)
3
611.646
13. Styrene
2
611.311(a)
3
611.646
14. Tetrachloroethylene
2
611.311(a)
3
611.646
15. Toluene
2
611.311(a)
3
611.646
16. 1,2,4-Trichlorobenzene
2
611.311(a)
3
611.646
17. 1,1,1-Trichloroethane
2
611.311(a)
3
611.646
18. 1,1,2-Trichloroethane
2
611.311(a)
3
611.646
19. Trichloroethylene
2
611.311(a)
3
611.646
20. Vinyl chloride
2
611.311(a)
3
611.646
21. Xylenes (total)
2
611.311(a)
3
611.646
F. Radioactive Contaminants
1. Beta/photon emitters
2
611.330(d)
3
611.720(a),
							 611.732
2. Alpha emitters
2
611.330(c)
3
611.720(a),
							 611.731
3. Combined radium (226 and 228)
2
611.330(b)
3
611.720(a),
							 611.731
4. Uranium
2
611.330(e)
3
611.720(a),
							 611.731
G. Disinfection Byproducts (DBPs), Byproduct Precursors,
				  Disinfectant Residuals. If disinfection is used in the treatment of drinking
				  water, disinfectants combine with organic and inorganic matter present in water
				  to form chemicals called disinfection byproducts (DBPs). USEPA sets standards
				  for controlling the levels of disinfectants and DBPs in drinking water,
				  including trihalomethanes (THMs) and haloacetic acids
				  (HAAs).13
1. Total trihalomethanes (TTHMs)
2
11611.312(b)
3
Subparts W and Y
2. Haloacetic Acids (HAA5)
2
611.312(b)
3
Subpart Y
3. Bromate
2
611.312(a)
3
611.382(a)-(b)
4. Chlorite
2
611.312(a)
3
611.382(a)-(b)
5. Chlorine (MRDL)
2
611.313(a)
3
611.382(a), (c)
6. Chloramine (MRDL)
2
611.313(a)
3
611.382(a), (c)
7. Chlorine dioxide (MRDL), if any two consecutive
							 daily samples at entrance to distribution system only are above MRDL
2
611.313(a),
							 611.383(c)(3)
212, 3
611.382(a),
							 (c),
							 611.383(c)(2)
8. Chlorine dioxide (MRDL), if samples in
							 distribution system the next day are also above MRDL
131
611.313(a),
							 611.383(c)(3)
1
611.382(a),
							 (c),
							 611.383(c)(2)
9. Control of DBP precursors - TOC (TT)
2
611.385(a)-(b)
3
611.382(a), (d)
10. Benchmarking and disinfection profiling
N/A
N/A
3
611.742, 611.953,
611.954
11. Development of monitoring plan
N/A
N/A
3
611.382(f)
H. Other Treatment Techniques
1. Acrylamide (TT)
2
611.296
N/A
N/A
2. Epichlorohydrin (TT)
2
611.296
N/A
N/A
II. Unregulated Contaminant Monitoring: 
				  14
A. Unregulated contaminants
N/A
N/A
3
as required by USEPA under
							 40 CFR
							 141.40
B. Nickel
N/A
N/A
3
611.603, 611.611
III. Public Notification for Relief Equivalent to a SDWA
				  section 1415 Variance or a section 1416 Exemption.
A. Operation under relief equivalent to a SDWA
							 section 1415 variance or a section 1416 exemption
3
15 1415, 1416
N/A
N/A
B. Violation of conditions of relief equivalent to a
							 SDWA section 1415 variance or a section 1416 exemption
2
1415, 1416, 
							 16
													611.111,
							 611.112
N/A
N/A
IV. Other Situations Requiring Public Notification.
A. Fluoride secondary maximum contaminant level
							 (SMCL) exceedance
3
611.858
N/A
N/A
B. Exceedance of nitrate MCL for a non-CWS supplier,
							 as allowed by the Agency
1
611.300(d)
N/A
N/A
C. Availability of unregulated contaminant monitoring
							 data
3
as required by USEPA under
							 40 CFR
							 141.40
N/A
N/A
D. Waterborne disease outbreak
1
611.101,
							 611.233(b)(2)
N/A
N/A
E. Other waterborne
							 emergency17
1
N/A
N/A
N/A
F. Source water sample positive for Groundwater Rule
							 fecal indicators: E. coli, enterococci, or coliphage
1
611.802(g)
N/A
N/A
G. Other situations as determined by the Agency in a
							 SEP under Section 602.600
181, 2, 3
N/A
N/A
N/A
Appendix G - Endnotes
1. Violations and other situations not listed in this table
				  (e.g., failure to prepare Consumer Confidence Reports) do not require notice,
				  unless the Agency issues a SEP requiring otherwise. The Agency may issue a SEP
				  further requiring a more stringent public notice tier (e.g., Tier 1 instead of
				  Tier 2 or Tier 2 instead of Tier 3) for specific violations and situations
				  listed in this Appendix, as authorized under Sections
				  611.902(a) and
				  611.903(a).
2. Definition of the abbreviations used: "MCL" means maximum
				  contaminant level, "MRDL" means maximum residual disinfectant level, and "TT"
				  means treatment technique.
3. The term "violations of National Primary Drinking Water
				  Regulations (NPDWR)" is used here to include violations of MCL, MRDL, treatment
				  technique, monitoring, and testing procedure requirements.
4. Failure to test for fecal coliform or E. coli is a Tier 1
				  violation if testing is not done after any repeat sample tests positive for
				  coliform. All other total coliform monitoring and testing procedure violations
				  are Tier 3 violations.
5. In the corresponding USEPA rule, this note relates to an
				  entry for the obsolete MCL for turbidity that does not apply to any supplier in
				  Illinois. This statement maintains structural consistency with the
				  corresponding USEPA rule.
6. A supplier with a treatment technique violation involving
				  a single exceedance of a maximum turbidity limit under the Surface Water
				  Treatment Rule (SWTR), the Interim Enhanced Surface Water Treatment Rule
				  (IESWTR), or the Long Term 1 Enhanced Surface Water Treatment Rule are required
				  to consult with the Agency within 24 hours after learning of the violation.
				  Based on this consultation, the Agency may subsequently decide to issue a SEP
				  elevating the violation to a Tier 1 violation. If a supplier is unable to make
				  contact with the Agency in the 24-hour period, the violation is automatically
				  elevated to a Tier 1 violation.
7. The Surface Water Treatment Rule (SWTR) remains in effect
				  for a supplier serving at least 10,000 persons; the Interim Enhanced Surface
				  Water Treatment Rule adds additional requirements and does not in many cases
				  supersede the SWTR.
8. Failure to take a confirmation sample within 24 hours for
				  nitrate or nitrite after an initial sample exceeds the MCL is a Tier 1
				  violation. Other monitoring violations for nitrate are Tier 3.
9. Failure to take a confirmation sample within 24 hours for
				  nitrate or nitrite after an initial sample exceeds the MCL is a Tier 1
				  violation. Other monitoring violations for nitrate are Tier 3.
10. A Subpart B community or non-transient non-community
				  system supplier must comply with new DBP MCLs, disinfectant MRDLs, and related
				  monitoring requirements. A Subpart B transient non-community system supplier
				  serving 10,000 or more persons using chlorine dioxide as a disinfectant or
				  oxidant or a Subpart B transient non-community system supplier serving fewer
				  than 10,000 persons, that uses only groundwater not under the direct influence
				  of surface water, and that uses chlorine dioxide as a disinfectant or oxidant
				  must comply with the chlorine dioxide MRDL.
11. Sections
				  611.312(b)(1)
				  and 611.382(a) and
				  (b) apply until Subpart Y takes effect under
				  the schedule set forth in Section
				  611.970(c).
12. Failure to monitor for chlorine dioxide at the entrance
				  to the distribution system the day after exceeding the MRDL at the entrance to
				  the distribution system is a Tier 2 violation.
13. If any daily sample taken at the entrance to the
				  distribution system exceeds the MRDL for chlorine dioxide and one or more
				  samples taken in the distribution system the next day exceed the MRDL, Tier 1
				  notification is required. A failure to take the required samples in the
				  distribution system after the MRDL is exceeded at the entry point also triggers
				  Tier 1 notification.
14. Some water suppliers must monitor for certain unregulated
				  contaminants as required by USEPA under
				  40 CFR
				  141.40.
15. This citation refers to sections 1415 and 1416 of the
				  federal Safe Drinking Water Act. sections 1415 and 1416 require that "a
				  schedule prescribed...for a public water system granted relief equivalent to a
				  SDWA section 1415 variance or a section 1416 exemption must require compliance
				  by the system...."
16. In addition to sections 1415 and 1416 of the federal Safe
				  Drinking Water Act, 40 CFR
				  142.307 specifies the items and schedule
				  milestones that must be included in relief equivalent to a SDWA section 1415
				  small system variance. In granting any form of relief from an NPDWR, the Board
				  will consider all applicable federal requirements for and limitations on the
				  State's ability to grant relief consistent with federal law.
17. Other waterborne emergencies require a Tier 1 public
				  notice under Section 611.902(a) for
				  situations that do not meet the definition of a waterborne disease outbreak
				  given in Section 611.101, but that still have the potential to have serious
				  adverse effects on health as a result of short-term exposure. These could
				  include outbreaks not related to treatment deficiencies, as well as situations
				  that have the potential to cause outbreaks, such as failures or significant
				  interruption in water treatment processes, natural disasters that disrupt the
				  water supply or distribution system, chemical spills, or unexpected loading of
				  possible pathogens into the source water.
18. The Agency may place any other situation in any tier it
				  deems appropriate in writing, based on the prospective threat which it
				  determines that the situation poses to public health, and subject to Board
				  review under Section 40 of the Act.
19. A failure to collect three or more samples for
				  Cryptosporidium analysis is a Tier 2 violation requiring special notice, as
				  specified in Section 611.911. All other monitoring
				  and testing procedure violations are Tier 3.
BOARD NOTE: This Appendix G derives from appendix A to
					 subpart Q of 40 CFR
					 141.