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Illinois Administrative Code (Last Updated: March 27, 2024) |
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TITLE35. ENVIRONMENTAL PROTECTION |
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PART611. PRIMARY DRINKING WATER STANDARDS |
| SUBPART A. GENERAL |
| § 611.100. Purpose, Scope, and Applicability |
| § 611.101. Definitions |
| § 611.102. Incorporations by Reference |
| § 611.103. Severability |
| § 611.105. Electronic Reporting |
| § 611.107. Agency Inspection of PWS Facilities [Repealed] |
| § 611.108. Delegation to Local Government |
| § 611.109. Enforcement |
| § 611.110. Special Exception Permits |
| § 611.111. Relief Equivalent to SDWA Section 1415(a) Variances |
| § 611.112. Relief Equivalent to SDWA Section 1416 Exemptions |
| § 611.113. Alternative Treatment Techniques |
| § 611.114. Siting Requirements |
| § 611.115. Source Water Quantity [Repealed] |
| § 611.120. Effective Dates [Repealed] |
| § 611.121. Maximum Contaminant Levels |
| § 611.125. Fluoridation Requirement |
| § 611.126. Using Lead-Free Pipes, Fittings, Fixtures, Solder, and Flux for Drinking Water |
| § 611.130. Special Requirements for Certain Variances and Adjusted Standards |
| § 611.131. Relief Equivalent to SDWA Section 1415(e) Small System Variance |
| § 611.160. Composite Correction Program |
| § 611.161. Case-by-Case Reduced Subpart Y Monitoring for Wholesale and Consecutive Systems |
| SUBPART B. FILTRATION AND DISINFECTION |
| § 611.201. Requiring a Demonstration |
| § 611.202. Procedures for Agency Determinations [Repealed] |
| § 611.211. Filtration Required |
| § 611.212. Groundwater under Direct Influence of Surface Water |
| § 611.213. No Method of HPC Analysis |
| § 611.220. General Requirements |
| § 611.230. Filtration Effective Dates [Repealed] |
| § 611.231. Source Water Limitation |
| § 611.232. Site-Specific Conditions [Repealed] |
| § 611.233. Treatment Technique Violations |
| § 611.240. Disinfection |
| § 611.241. Unfiltered PWSs [Repealed] |
| § 611.242. Filtered PWSs |
| § 611.250. Filtration |
| § 611.261. Unfiltered PWSs: Reporting and Recordkeeping |
| § 611.262. Filtered PWSs: Reporting and Recordkeeping |
| § 611.271. Protection during Repair Work [Repealed] |
| § 611.272. Disinfection Following Repair [Repealed] |
| § 611.276. Recycle Provisions |
| SUBPART C. USE OF NON-CENTRALIZED TREATMENT DEVICES |
| § 611.280. Point-of-Entry Devices |
| § 611.290. Point-of-Use Devices or Bottled Water |
| SUBPART D. TREATMENT TECHNIQUES |
| § 611.295. General Requirements |
| § 611.296. Acrylamide and Epichlorohydrin |
| § 611.297. Corrosion Control [Repealed] |
| SUBPART F. MAXIMUM CONTAMINANT LEVELS (MCLs) AND MAXIMUM RESIDUAL DISINFECTANT LEVELS (MRDLs) |
| § 611.300. State-Only MCLs for Inorganic Chemical Contaminants |
| § 611.301. Revised MCLs for Inorganic Chemical Contaminants |
| § 611.310. State-Only Maximum Contaminant Levels (MCLs) for Organic Chemical Contaminants |
| § 611.311. Revised MCLs for Organic Chemical Contaminants |
| § 611.312. Maximum Contaminant Levels (MCLs) for Disinfection Byproducts (DBPs) |
| § 611.313. Maximum Residual Disinfectant Levels (MRDLs) |
| § 611.320. Turbidity [Repealed] |
| § 611.325. Microbiological Contaminants |
| § 611.330. Maximum Contaminant Levels for Radionuclides |
| § 611.331. Beta Particle and Photon Radioactivity [Repealed] |
| SUBPART G. LEAD AND COPPER |
| § 611.350. General Requirements |
| § 611.351. Applicability of Corrosion Control |
| § 611.352. Corrosion Control Treatment |
| § 611.353. Source Water Treatment |
| § 611.354. Lead Service Line Inventory and Replacing Lead Service Lines |
| § 611.355. Public Education and Supplemental Monitoring and Mitigation |
| § 611.356. Tap Water Monitoring for Lead and Copper |
| § 611.357. Monitoring for Water Quality Parameters |
| § 611.358. Monitoring for Lead and Copper in Source Water |
| § 611.359. Analytical Methods |
| § 611.360. Reporting |
| § 611.361. Recordkeeping |
| § 611.362. Monitoring for Lead in Schools and Child Care Facilities |
| § 611.363. Small Supplier Compliance Flexibility |
| SUBPART I. DISINFECTANT RESIDUALS, DISINFECTION BYPRODUCTS, AND DISINFECTION BYPRODUCT PRECURSORS |
| § 611.380. General Requirements |
| § 611.381. Analytical Requirements |
| § 611.382. Monitoring Requirements |
| § 611.383. Compliance Requirements |
| § 611.384. Reporting and Recordkeeping Requirements |
| § 611.385. Treatment Technique for Control of Disinfection Byproduct (DBP) Precursors |
| SUBPART K. GENERAL MONITORING AND ANALYTICAL REQUIREMENTS |
| § 611.480. Alternative Analytical Techniques |
| § 611.490. Certified Laboratories |
| § 611.491. Laboratory Testing Equipment [Repealed] |
| § 611.500. Consecutive PWSs |
| § 611.510. Special Monitoring for Unregulated Contaminants [Repealed] |
| SUBPART L. MICROBIOLOGICAL MONITORING AND ANALYTICAL REQUIREMENTS |
| § 611.521. Routine Coliform Monitoring [Repealed] |
| § 611.522. Repeat Coliform Monitoring [Repealed] |
| § 611.523. Invalidation of Total Coliform Samples [Repealed] |
| § 611.524. Sanitary Surveys [Repealed] |
| § 611.525. Fecal Coliform and E. Coli Testing [Repealed] |
| § 611.526. Analytical Methodology [Repealed] |
| § 611.527. Response to Violation [Repealed] |
| § 611.528. Transition from Subpart L to Subpart AA Requirements [Repealed] |
| § 611.531. Analytical Requirements |
| § 611.532. Unfiltered PWSs |
| § 611.533. Filtered PWSs |
| SUBPART M. TURBIDITY MONITORING AND ANALYTICAL REQUIREMENTS |
| § 611.560. Turbidity [Repealed] |
| SUBPART N. INORGANIC MONITORING AND ANALYTICAL REQUIREMENTS |
| § 611.591. Violation of a State-Only MCL |
| § 611.592. Frequency of State Monitoring |
| § 611.600. Applicability |
| § 611.601. Monitoring Frequency |
| § 611.602. Asbestos Monitoring Frequency |
| § 611.603. Inorganic Monitoring Frequency |
| § 611.604. Nitrate Monitoring |
| § 611.605. Nitrite Monitoring |
| § 611.606. Confirmation Samples |
| § 611.607. More Frequent Monitoring and Confirmation Sampling |
| § 611.608. Additional Optional Monitoring |
| § 611.609. Determining Compliance |
| § 611.610. Inorganic Monitoring Times |
| § 611.611. Inorganic Analysis |
| § 611.612. Monitoring Requirements for Old Inorganic MCLs |
| § 611.630. Special Monitoring for Sodium |
| § 611.631. Special Monitoring for Inorganic Chemicals [Repealed] |
| SUBPART O. ORGANIC MONITORING AND ANALYTICAL REQUIREMENTS |
| § 611.640. Definitions |
| § 611.641. State-Only MCLs |
| § 611.645. Analytical Methods for Organic Chemical Contaminants |
| § 611.646. Phase I, Phase II, and Phase V Volatile Organic Contaminants |
| § 611.647. Sampling for Phase I Volatile Organic Contaminants [Repealed] |
| § 611.648. Phase II, Phase IIB, and Phase V Synthetic Organic Contaminants |
| § 611.650. Monitoring for 36 Contaminants [Repealed] |
| § 611.657. Analytical Methods for 36 Contaminants [Repealed] |
| § 611.658. Special Monitoring for Organic Chemicals [Repealed] |
| SUBPART P. THM MONITORING AND ANALYTICAL REQUIREMENTS |
| § 611.680. Sampling, Analytical, and other Requirements [Repealed] |
| § 611.683. Reduced Monitoring Frequency [Repealed] |
| § 611.684. Averaging [Repealed] |
| § 611.685. Analytical Methods [Repealed] |
| § 611.686. Modification to System [Repealed] |
| § 611.687. Sampling for Maximum THM Potential [Repealed] |
| § 611.688. Applicability Dates [Repealed] |
| SUBPART Q. RADIOLOGICAL MONITORING AND ANALYTICAL REQUIREMENTS |
| § 611.720. Analytical Methods |
| § 611.731. Gross Alpha |
| § 611.732. Beta Particle and Photon Radioactivity |
| § 611.733. General Monitoring and Compliance Requirements |
| SUBPART R. ENHANCED FILTRATION AND DISINFECTION: SYSTEMS THAT SERVE 10,000 OR MORE PEOPLE |
| § 611.740. General Requirements |
| § 611.741. Standards for Filtration |
| § 611.742. Disinfection Profiling and Benchmarking |
| § 611.743. Filtration |
| § 611.744. Filtration Sampling Requirements |
| § 611.745. Reporting and Recordkeeping Requirements |
| SUBPART S. GROUNDWATER RULE |
| § 611.800. General Requirements and Applicability |
| § 611.801. Sanitary Surveys for GWS Suppliers |
| § 611.802. Groundwater Source Microbial Monitoring and Analytical Methods |
| § 611.803. Treatment Technique Requirements for GWS Suppliers |
| § 611.804. Treatment Technique Violations for GWS Suppliers |
| § 611.805. Reporting and Recordkeeping for GWS Suppliers |
| SUBPART T. REPORTING AND RECORDKEEPING |
| § 611.830. Applicability |
| § 611.831. Monthly Operating Report [Repealed] |
| § 611.832. Notice by Agency [Repealed] |
| § 611.833. Cross Connection Reporting [Repealed] |
| § 611.840. Reporting |
| § 611.851. Reporting MCL, MRDL, and other Violations [Repealed] |
| § 611.852. Reporting other Violations [Repealed] |
| § 611.853. Notice to New Billing Units [Repealed] |
| § 611.854. General Content of Public Notice [Repealed] |
| § 611.855. Mandatory Health Effects Language [Repealed] |
| § 611.856. Fluoride Notice [Repealed] |
| § 611.858. Fluoride Secondary Standard [Repealed] |
| § 611.860. Record Maintenance |
| § 611.870. List of 36 Contaminants [Repealed] |
| SUBPART U. CONSUMER CONFIDENCE REPORTS |
| § 611.881. Purpose and Applicability |
| § 611.882. Compliance Dates |
| § 611.883. Content of the Reports |
| § 611.884. Required Additional Health Information |
| § 611.885. Report Delivery and Recordkeeping |
| SUBPART V. PUBLIC NOTIFICATION OF DRINKING WATER VIOLATIONS |
| § 611.901. General Public Notification Requirements |
| § 611.902. Tier 1 Public Notice: Form, Manner, and Frequency of Notice |
| § 611.903. Tier 2 Public Notice: Form, Manner, and Frequency of Notice |
| § 611.904. Tier 3 Public Notice: Form, Manner, and Frequency of Notice |
| § 611.905. Content of the Public Notice |
| § 611.906. Notice to New Billing Units or New Customers |
| § 611.907. Special Notice of the Availability of Unregulated Contaminant Monitoring Results |
| § 611.908. Special Notice for Exceedance of the Fluoride Secondary Standard |
| § 611.909. Special Notice for Nitrate Exceedances above the MCL by a Non-Community Water System |
| § 611.910. Notice by the Agency on Behalf of a PWS |
| § 611.911. Special Notice for Cryptosporidium |
| SUBPART W. INITIAL DISTRIBUTION SYSTEM EVALUATIONS |
| § 611.920. General Requirements |
| § 611.921. Standard Monitoring |
| § 611.922. System-Specific Studies |
| § 611.923. 40/30 Certification |
| § 611.924. Very Small System Waivers |
| § 611.925. Subpart Y Compliance Monitoring Location Recommendations |
| SUBPART X. ENHANCED FILTRATION AND DISINFECTION – SYSTEMS SERVING FEWER THAN 10,000 PEOPLE |
| § 611.950. General Requirements |
| § 611.951. Finished Water Reservoirs |
| § 611.952. Additional Watershed Control Requirements for Unfiltered Systems |
| § 611.953. Disinfection Profile |
| § 611.954. Disinfection Benchmark |
| § 611.955. Combined Filter Effluent Turbidity Limits |
| § 611.956. Individual Filter Turbidity Requirements |
| § 611.957. Reporting and Recordkeeping Requirements |
| SUBPART Y. STAGE 2 DISINFECTION BYPRODUCTS REQUIREMENTS |
| § 611.970. General Requirements |
| § 611.971. Routine Monitoring |
| § 611.972. Subpart Y Monitoring Plan |
| § 611.973. Reduced Monitoring |
| § 611.974. Additional Requirements for Consecutive Systems |
| § 611.975. Conditions Requiring Increased Monitoring |
| § 611.976. Operational Evaluation Levels |
| § 611.977. Requirements for Remaining on Reduced TTHM and HAA5 Monitoring Based on Subpart I Results |
| § 611.978. Requirements for Remaining on Increased TTHM and HAA5 Monitoring Based on Subpart I Results |
| § 611.979. Reporting and Recordkeeping Requirements |
| SUBPART Z. ENHANCED TREATMENT FOR CRYPTOSPORIDIUM |
| § 611.1000. General Requirements |
| § 611.1001. Source Water Monitoring Requirements: Source Water Monitoring |
| § 611.1002. Source Water Monitoring Requirements: Sampling Schedules |
| § 611.1003. Source Water Monitoring Requirements: Sampling Locations |
| § 611.1004. Source Water Monitoring Requirements: Analytical Methods |
| § 611.1005. Source Water Monitoring Requirements: Approved Laboratories |
| § 611.1006. Source Water Monitoring Requirements: Reporting Source Water Monitoring Results |
| § 611.1007. Source Water Monitoring Requirements: Grandfathering Previously Collected Data |
| § 611.1008. Disinfection Profiling and Benchmarking Requirements: Requirements When Making a Significant Change in Disinfection Practice |
| § 611.1009. Disinfection Profiling and Benchmarking Requirements: Developing the Disinfection Profile and Benchmark |
| § 611.1010. Treatment Technique Requirements: Bin Classification for Filtered System Suppliers |
| § 611.1011. Treatment Technique Requirements: Filtered System Additional Cryptosporidium Treatment Requirements |
| § 611.1012. Treatment Technique Requirements: Unfiltered System Cryptosporidium Treatment Requirements |
| § 611.1013. Treatment Technique Requirements: Schedule for Compliance with Cryptosporidium Treatment Requirements |
| § 611.1014. Treatment Technique Requirements: Requirements for Uncovered Finished Water Storage Facilities |
| § 611.1015. Requirements for Microbial Toolbox Components: Microbial Toolbox Options for Meeting Cryptosporidium Treatment Requirements |
| § 611.1016. Requirements for Microbial Toolbox Components: Source Toolbox Components |
| § 611.1017. Requirements for Microbial Toolbox Components: Pre-Filtration Treatment Toolbox Components |
| § 611.1018. Requirements for Microbial Toolbox Components: Treatment Performance Toolbox Components |
| § 611.1019. Requirements for Microbial Toolbox Components: Additional Filtration Toolbox Components |
| § 611.1020. Requirements for Microbial Toolbox Components: Inactivation Toolbox Components |
| § 611.1021. Reporting and Recordkeeping Requirements: Reporting Requirements |
| § 611.1022. Reporting and Recordkeeping Requirements: Recordkeeping Requirements |
| § 611.1023. Requirements to Respond to Significant Deficiencies Identified in Sanitary Surveys Performed by USEPA or the Agency |
| SUBPART AA. REVISED TOTAL COLIFORM RULE |
| § 611.1051. General |
| § 611.1052. Analytical Methods and Laboratory Certification |
| § 611.1053. General Monitoring Requirements for all PWSs |
| § 611.1054. Routine Monitoring Requirements for Non-CWSs That Serve 1,000 or Fewer People Using Only Groundwater |
| § 611.1055. Routine Monitoring Requirements for CWSs That Serve 1,000 or Fewer People Using Only Groundwater |
| § 611.1056. Routine Monitoring Requirements for Subpart B Systems That Serve 1,000 or Fewer People |
| § 611.1057. Routine Monitoring Requirements for PWSs That Serve More Than 1,000 People |
| § 611.1058. Repeat Monitoring and E. coli Requirements |
| § 611.1059. Coliform Treatment Technique Triggers and Assessment Requirements for Protection Against Potential Fecal Contamination |
| § 611.1060. Violations |
| § 611.1061. Reporting and Recordkeeping |
| SUBPART AG. INTERIM LEAD AND COPPER RULES |
| § 611.1350. General Requirements |
| § 611.1351. Applicability of Corrosion Control |
| § 611.1352. Corrosion Control Treatment |
| § 611.1353. Source Water Treatment |
| § 611.1354. Lead Service Line Replacement |
| § 611.1355. Public Education and Supplemental Monitoring |
| § 611.1356. Tap Water Monitoring for Lead and Copper |
| § 611.1357. Monitoring for Water Quality Parameters |
| § 611.1358. Monitoring for Lead and Copper in Source Water |
| § 611.1359. Analytical Methods |
| § 611.1360. Reporting |
| § 611.1361. Recordkeeping |
| § 611.APPENDIX A. Regulated Contaminants |
| § 611.APPENDIX B. Percent Inactivation of G. Lamblia Cysts |
| § 611.APPENDIX C. Common Names of Organic Chemicals |
| § 611.APPENDIX D. Defined Substrate Method for the Simultaneous Detection of Total Coliforms and Escherichia Coli from Drinking Water [Repealed] |
| § 611.APPENDIX E. Mandatory Lead Public Education Information for Community Water Systems |
| § 611.APPENDIX F. Mandatory Lead Public Education Information for Non-Transient Non-Community Water Systems |
| § 611.APPENDIX G. NPDWR Violations and Situations Requiring Public Notice |
| § 611.APPENDIX H. Standard Health Effects Language for Public Notification |
| § 611.APPENDIX I. Acronyms Used in Public Notification Regulation |
| § 611.TABLE A. Total Coliform Monitoring Frequency [Repealed] |
| § 611.TABLE B. Fecal or Total Coliform Density Measurements |
| § 611.TABLE C. Frequency of RDC Measurement |
| § 611.TABLE D. Number of Lead and Copper Monitoring Sites |
| § 611.TABLE E. Lead and Copper Monitoring Start Dates [Repealed] |
| § 611.TABLE F. Number of Water Quality Parameter Sampling Sites |
| § 611.TABLE G. Summary of Section 611.357 Monitoring Requirements for Water Quality Parameters [Repealed] |
| § 611.TABLE H. CT Values (mg·min/l) for Cryptosporidium Inactivation by Chlorine Dioxide |
| § 611.TABLE I. CT Values (mg·min/l) for Cryptosporidium Inactivation by Ozone |
| § 611.TABLE J. UV Dose Table for Cryptosporidium, Giardia lamblia, and Virus Inactivation Credit |
| § 611.TABLE R. Radionuclide Conversion Factors |
| § 611.TABLE Z. Federal Effective Dates |
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SOURCE: Adopted in R88-26 at 14 Ill. Reg. 16517, effective September 20, 1990; amended in R90-21 at 14 Ill. Reg. 20448, effective December 11, 1990; amended in R90-13 at 15 Ill. Reg. 1562, effective January 22, 1991; amended in R91-3 at 16 Ill. Reg. 19010, effective December 1, 1992; amended in R92-3 at 17 Ill. Reg. 7796, effective May 18, 1993; amended in R93-1 at 17 Ill. Reg. 12650, effective July 23, 1993; amended in R94-4 at 18 Ill. Reg. 12291, effective July 28, 1994; amended in R94-23 at 19 Ill. Reg. 8613, effective June 20, 1995; amended in R95-17 at 20 Ill. Reg. 14493, effective October 22, 1996; amended in R98-2 at 22 Ill. Reg. 5020, effective March 5, 1998; amended in R99-6 at 23 Ill. Reg. 2756, effective February 17, 1999; amended in R99-12 at 23 Ill. Reg. 10348, effective August 11, 1999; amended in R00-8 at 23 Ill. Reg. 14715, effective December 8, 1999; amended in R00-10 at 24 Ill. Reg. 14226, effective September 11, 2000; amended in R01-7 at 25 Ill. Reg. 1329, effective January 11, 2001; amended in R01-20 at 25 Ill. Reg. 13611, effective October 9, 2001; amended in R02-5 at 26 Ill. Reg. 3522, effective February 22, 2002; amended in R03-4 at 27 Ill. Reg. 1183, effective January 10, 2003; amended in R03-15 at 27 Ill. Reg. 16447, effective October 10, 2003; amended in R04-3 at 28 Ill. Reg. 5269, effective March 10, 2004; amended in R04-13 at 28 Ill. Reg. 12666, effective August 26, 2004; amended in R05-6 at 29 Ill. Reg. 2287, effective January 28, 2005; amended in R06-15 at 30 Ill. Reg. 17004, effective October 13, 2006; amended in R07-2/R07-11 at 31 Ill. Reg. 11757, effective July 27, 2007; amended in R08-7/R08-13 at 33 Ill. Reg. 633, effective December 30, 2008; amended in R10-1/R10-17/R11-6 at 34 Ill. Reg. 19848, effective December 7, 2010; amended in R12-4 at 36 Ill. Reg. 7110, effective April 25, 2012; amended in R13-2 at 37 Ill. Reg. 1978, effective February 4, 2013; amended in R14-8 at 38 Ill. Reg. 3608, effective January 27, 2014; amended in R14-9 at 38 Ill. Reg. 9792, effective April 21, 2014; amended in R15-6 at 39 Ill. Reg. 3713, effective February 24, 2015; amended in R15-23 at 39 Ill. Reg. 15144, effective November 9, 2015; amended in R16-4 at 39 Ill. Reg. 15352, effective November 13, 2015; amended in R17-12 at 42 Ill. Reg. 1140, effective January 4, 2018; amended in R18-9 at 42 Ill. Reg. 9316, effective May 29, 2018; amended in R18-17 at 43 Ill. Reg. 8206, effective July 26, 2019; amended in R19-16 at 44 Ill. Reg. 6996, effective April 17, 2020; amended in R18-26 at 47 Ill. Reg. 7556, effective May 16, 2023; amended in R21-10/R22-2 at 47 Ill. Reg. 16486, effective November 2, 2023; amended in R23-9 at 47 Ill. Reg. 18996, effective December 7, 2023.
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Notation
AUTHORITY: Implementing Sections 7.2, 17, and 17.5 and authorized by Section 27 of the Environmental Protection Act [415 ILCS 5/7.2, 17, 17.5, and 27].