[Code of Federal Regulations] [Title 40, Volume 22] [Revised as of July 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR141.1] [Page 343-345] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 141_NATIONAL PRIMARY DRINKING WATER REGULATIONS--Table of Contents Subpart A_General Sec. 141.1 Applicability. Subpart A_General Sec. 141.1 Applicability. 141.2 Definitions. 141.3 Coverage. 141.4 Variances and exemptions. 141.5 Siting requirements. 141.6 Effective dates. Subpart B_Maximum Contaminant Levels 141.11 Maximum contaminant levels for inorganic chemicals. 141.12 Maximum contaminant levels for total trihalomethanes. 141.13 Maximum contaminant levels for turbidity. Subpart C_Monitoring and Analytical Requirements 141.21 Coliform sampling. 141.22 Turbidity sampling and analytical requirements. 141.23 Inorganic chemical sampling and analytical requirements. 141.24 Organic chemicals, sampling and analytical requirements. 141.25 Analytical methods for radioactivity. 141.26 Monitoring frequency and compliance requirements for radionuclides in community water systems 141.27 Alternate analytical techniques. 141.28 Certified laboratories. 141.29 Monitoring of consecutive public water systems. 141.30 Total trihalomethanes sampling, analytical and other requirements. Subpart D_Reporting and Recordkeeping 141.31 Reporting requirements. 141.32 Public notification. 141.33 Record maintenance. 141.34 [Reserved] 141.35 Reporting of unregulated contaminant monitoring results. Subpart E_Special Regulations, Including Monitoring Regulations and Prohibition on Lead Use 141.40 Monitoring requirements for unregulated contaminants. 141.41 Special monitoring for sodium. 141.42 Special monitoring for corrosivity characteristics. 141.43 Prohibition on use of lead pipes, solder, and flux. Subpart F_Maximum Contaminant Level Goals and Maximum Residual Disinfectant Level Goals 141.50 Maximum contaminant level goals for organic contaminants. 141.51 Maximum contaminant level goals for inorganic contaminants. 141.52 Maximum contaminant level goals for microbiological contaminants. 141.53 Maximum contaminant level goals for disinfection byproducts. 141.54 Maximum residual disinfectant level goals for disinfectants. 141.55 Maximum contaminant level goals for radionuclides. Subpart G_National Primary Drinking Water Regulations: Maximum Contaminant Levels and Maximum Residual Disinfectant Levels 141.60 Effective dates. 141.61 Maximum contaminant levels for organic contaminants. 141.62 Maximum contaminant levels for inorganic contaminants. 141.63 Maximum contaminant levels (MCLs) for microbiological contaminants. 141.64 Maximum contaminant levels for disinfection byproducts. 141.65 Maximum residual disinfectant levels. 141.66 Maximum contaminant levels for radionuclides. Subpart H_Filtration and Disinfection 141.70 General requirements. 141.71 Criteria for avoiding filtration. 141.72 Disinfection. 141.73 Filtration. 141.74 Analytical and monitoring requirements. 141.75 Reporting and recordkeeping requirements. 141.76 Recycle provisions. Subpart I_Control of Lead and Copper 141.80 General requirements. [[Page 344]] 141.81 Applicability of corrosion control treatment steps to small, medium-size and large water systems. 141.82 Description of corrosion control treatment requirements. 141.83 Source water treatment requirements. 141.84 Lead service line replacement requirements. 141.85 Public education and supplemental monitoring requirements. 141.86 Monitoring requirements for lead and copper in tap water. 141.87 Monitoring requirements for water quality parameters. 141.88 Monitoring requirements for lead and copper in source water. 141.89 Analytical methods. 141.90 Reporting requirements. 141.91 Recordkeeping requirements. Subpart J_Use of Non-Centralized Treatment Devices 141.100 Criteria and procedures for public water systems using point-of- entry devices. 141.101 Use of bottled water. Subpart K_Treatment Techniques 141.110 General requirements. 141.111 Treatment techniques for acrylamide and epichlorohydrin. Subpart L_Disinfectant Residuals, Disinfection Byproducts, and Disinfection Byproduct Precursors 141.130 General requirements. 141.131 Analytical requirements. 141.132 Monitoring requirements. 141.133 Compliance requirements. 141.134 Reporting and recordkeeping requirements. 141.135 Treatment technique for control of disinfection byproduct (DBP) precursors. Subparts M-N [Reserved] Subpart O_Consumer Confidence Reports 141.151 Purpose and applicability of this subpart. 141.152 Effective dates. 141.153 Content of the reports. 141.154 Required additional health information. 141.155 Report delivery and recordkeeping. Appendix A to Subpart O of Part 141--Regulated Contaminants Subpart P_Enhanced Filtration and Disinfection_Systems Serving 10,000 or More People 141.170 General requirements. 141.171 Criteria for avoiding filtration. 141.172 Disinfection profiling and benchmarking. 141.173 Filtration. 141.174 Filtration sampling requirements. 141.175 Reporting and recordkeeping requirements. Subpart Q_Public Notification of Drinking Water Violations 141.201 General public notification requirements. 141.202 Tier 1 Public Notice--Form, manner, and frequency of notice. 141.203 Tier 2 Public Notice--Form, manner, and frequency of notice. 141.204 Tier 3 Public Notice--Form, manner, and frequency of notice. 141.205 Content of the public notice. 141.206 Notice to new billing units or new customers. 141.207 Special notice of the availability of unregulated contaminant monitoring results. 141.208 Special notice for exceedance of the SMCL for fluoride. 141.209 Special notice for nitrate exceedances above MCL by non- community water systems (NCWS), where granted permission by the primacy agency under Sec. 141.11(d). 141.210 Notice by primacy agency on behalf of the public water system. Appendix A to Subpart Q of Part 141--NPDWR Violations and Situations Requiring Public Notice Appendix B to Subpart Q of Part 141--Standard Health Effects Language for Public Notification Appendix C to Subpart Q of Part 141--List of Acronyms Used in Public Notification Regulation Subparts R-S [Reserved] Subpart T_Enhanced Filtration and Disinfection_Systems Serving Fewer Than 10,000 People General Requirements 141.500 General requirements. 141.501 Who is subject to the requirements of subpart T? 141.502 When must my system comply with these requirements? 141.503 What does subpart T require? Finished Water Reservoirs 141.510 Is my system subject to the new finished water reservoir requirements? 141.511 What is required of new finished water reservoirs? [[Page 345]] Additional Watershed Control Requirements for Unfiltered Systems 141.520 Is my system subject to the updated watershed control requirements? 141.521 What updated watershed control requirements must my unfiltered system implement to continue to avoid filtration? 141.522 How does the State determine whether my system's watershed control requirements are adequate? Disinfection Profile 141.530 What is a disinfection profile and who must develop one? 141.531 What criteria must a State use to determine that a profile is unnecessary? 141.532 How does my system develop a disinfection profile and when must it begin? 141.533 What data must my system collect to calculate a disinfection profile? 141.534 How does my system use this data to calculate an inactivation ratio? 141.535 What if my system uses chloramines, ozone, or chlorine dioxide for primary disinfection? 141.536 My system has developed an inactivation ratio; what must we do now? Disinfection Benchmark 141.540 Who has to develop a disinfection benchmark? 141.541 What are significant changes to disinfection practice? 141.542 What must my system do if we are considering a significant change to disinfection practices? 141.543 How is the disinfection benchmark calculated? 141.544 What if my system uses chloramines, ozone, or chlorine dioxide for primary disinfection? Combined Filter Effluent Requirements 141.550 Is my system required to meet subpart T combined filter effluent turbidity limits? 141.551 What strengthened combined filter effluent turbidity limits must my system meet? 141.552 My system consists of ``alternative filtration'' and is required to conduct a demonstration--what is required of my system and how does the State establish my turbidity limits? 141.553 My system practices lime softening--is there any special provision regarding my combined filter effluent? Individual Filter Turbidity Requirements 141.560 Is my system subject to individual filter turbidity requirements? 141.561 What happens if my system's turbidity monitoring equipment fails? 141.562 My system only has two or fewer filters--is there any special provision regarding individual filter turbidity monitoring? 141.563 What follow-up action is my system required to take based on continuous turbidity monitoring? 141.564 My system practices lime softening--is there any special provision regarding my individual filter turbidity monitoring? Reporting and Recordkeeping Requirements 141.570 What does subpart T require that my system report to the State? 141.571 What records does subpart T require my system to keep? Authority: 42 U.S.C. 300f, 300g-1, 300g-2, 300g-3, 300g-4, 300g-5, 300g-6, 300j-4, 300j-9, and 300j-11. Source: 40 FR 59570, Dec. 24, 1975, unless otherwise noted. Editorial Note: Nomenclature changes to part 141 appear at 69 FR 18803, Apr. 9, 2004. Note: For community water systems serving 75,000 or more persons,monitoring must begin 1 year following promulation and the effective date of the MCL is 2 years following promulgation. For community water systems serving 10,000 to 75,000 persons, monitoring must begin within 3 years from the date of promulgation and the effective date of the MCL is 4 years from the date of promulgation. Effective immediately, systems that plan to make significant modifications to their treatment processes for the purpose of complying with the TTHM MCL are required to seek and obtain State approval of their treatment modification plans. This note affects Sec. Sec. 141.2, 141.6, 141.12, 141.24 and 141.30. For additional information see 44 FR 68641, Nov. 29, 1979. This part establishes primary drinking water regulations pursuant to section 1412 of the Public Health Service Act, as amended by the Safe Drinking Water Act (Pub. L. 93-523); and related regulations applicable to public water systems.