Title 40--Protection of Environment
CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY
PART 141--NATIONAL PRIMARY DRINKING WATER REGULATIONS
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| 141.1 |
Applicability. |
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| 141.2 |
Definitions.
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| 141.3 |
Coverage. |
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| 141.4 |
Variances and exemptions. |
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| 141.5 |
Siting requirements. |
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| 141.6 |
Effective dates.
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| 141.11 |
Maximum contaminant levels for inorganic chemicals.
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| 141.12 |
Maximum contaminant levels for total trihalomethanes. |
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| 141.13 |
Maximum contaminant levels for turbidity. |
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| 141.15 |
Maximum contaminant levels for radium-226, radium-228, and gross alpha particle radioactivity in community water systems. |
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| 141.16 |
Maximum contaminant levels for beta particle and photon radioactivity from man-made radionuclides in community water systems. |
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| 141.21 |
Coliform sampling. |
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| 141.22 |
Turbidity sampling and analytical requirements. |
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| 141.23 |
Inorganic chemical sampling and analytical requirements.
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| 141.23 |
Inorganic chemical sampling and analytical requirements. |
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| 141.24 |
Organic chemicals, sampling and analytical requirements.
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| 141.24 |
Organic chemicals other than total trihalomethanes, sampling and analytical methods. |
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| 141.25 |
Analytical methods for radioactivity. |
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| 141.25 |
Analytical methods for radioactivity. |
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| 141.26 |
Monitoring frequency for radioactivity in community water systems. |
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| 141.26 |
Monitoring frequency and compliance requirements for radionuclides in community water systems |
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| 141.27 |
Alternate analytical techniques. |
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| 141.28 |
Certified laboratories. |
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| 141.29 |
Monitoring of consecutive public water systems. |
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| 141.30 |
Total trihalomethanes sampling, analytical and other requirements. |
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| 141.31 |
Reporting requirements. |
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| 141.32 |
Public notification. |
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| 141.33 |
Record maintenance. |
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| 141.35 |
Reporting of unregulated contaminant monitoring results. |
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| 141.40 |
Monitoring requirements for unregulated contaminants.
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| 141.41 |
Special monitoring for sodium. |
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| 141.42 |
Special monitoring for corrosivity characteristics. |
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| 141.43 |
Prohibition on use of lead pipes, solder, and flux. |
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| 141.50 |
Maximum contaminant level goals for organic contaminants. |
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| 141.51 |
Maximum contaminant level goals for inorganic contaminants.
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| 141.52 |
Maximum contaminant level goals for microbiological contaminants. |
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| 141.53 |
Maximum contaminant level goals for disinfection byproducts. |
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| 141.54 |
Maximum residual disinfectant level goals for disinfectants. |
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| 141.55 |
Maximum contaminant level goals for radionuclides. |
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| 141.60 |
Effective dates.
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| 141.61 |
Maximum contaminant levels for organic contaminants. |
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| 141.62 |
Maximum contaminant levels for inorganic contaminants.
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| 141.63 |
Maximum contaminant levels (MCLs) for microbiological contaminants. |
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| 141.64 |
Maximum contaminant levels for disinfection byproducts. |
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| 141.65 |
Maximum residual disinfectant levels. |
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| 141.66 |
Maximum contaminant levels for radionuclides. |
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| 141.70 |
General requirements.
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| 141.71 |
Criteria for avoiding filtration. |
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| 141.72 |
Disinfection. |
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| 141.73 |
Filtration.
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| 141.74 |
Analytical and monitoring requirements. |
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| 141.75 |
Reporting and recordkeeping requirements. |
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| 141.76 |
Recycle provisions. |
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| 141.80 |
General requirements. |
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| 141.81 |
Applicability of corrosion control treatment steps to small, medium-size and large water systems. |
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| 141.82 |
Description of corrosion control treatment requirements. |
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| 141.83 |
Source water treatment requirements. |
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| 141.84 |
Lead service line replacement requirements. |
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| 141.85 |
Public education and supplemental monitoring requirements. |
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| 141.86 |
Monitoring requirements for lead and copper in tap water. |
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| 141.87 |
Monitoring requirements for water quality parameters. |
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| 141.88 |
Monitoring requirements for lead and copper in source water. |
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| 141.89 |
Analytical methods. |
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| 141.90 |
Reporting requirements. |
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| 141.91 |
Recordkeeping requirements. |
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| 141.100 |
Criteria and procedures for public water systems using point-of-entry devices. |
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| 141.101 |
Use of bottled water. |
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| 141.110 |
General requirements. |
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| 141.111 |
Treatment techniques for acrylamide and epichlorohydrin. |
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| 141.130 |
General requirements. |
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| 141.131 |
Analytical requirements. |
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| 141.132 |
Monitoring requirements. |
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| 141.133 |
Compliance requirements. |
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| 141.134 |
Reporting and recordkeeping requirements.
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| 141.135 |
Treatment technique for control of disinfection byproduct (DBP) precursors. |
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| 141.151 |
Purpose and applicability of this subpart. |
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| 141.152 |
Effective dates. |
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| 141.153 |
Content of the reports.
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| 141.154 |
Required additional health information.
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| 141.155 |
Report delivery and recordkeeping. |
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| 141.170 |
General requirements.
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| 141.171 |
Criteria for avoiding filtration. |
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| 141.172 |
Disinfection profiling and benchmarking. |
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| 141.173 |
Filtration. |
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| 141.174 |
Filtration sampling requirements. |
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| 141.175 |
Reporting and recordkeeping requirements. |
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| 141.201 |
General public notification requirements. |
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| 141.202 |
Tier 1 Public Notice--Form, manner, and frequency of notice.
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| 141.203 |
Tier 2 Public Notice--Form, manner, and frequency of notice.
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| 141.204 |
Tier 3 Public Notice--Form, manner, and frequency of notice. |
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| 141.205 |
Content of the public notice. |
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| 141.206 |
Notice to new billing units or new customers. |
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| 141.207 |
Special notice of the availability of unregulated contaminant monitoring results. |
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| 141.208 |
Special notice for exceedance of the SMCL for fluoride. |
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| 141.209 |
Special notice for nitrate exceedances above MCL by non-community water systems (NCWS), where granted permission by the primacy agency under 141.11(d) |
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| 141.210 |
Notice by primacy agency on behalf of the public water system. |
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| 141.500 |
General requirements. |
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| 141.501 |
Who is subject to the requirements of subpart T? |
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| 141.502 |
When must my system comply with these requirements? |
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| 141.503 |
What does subpart T require? |
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| 141.510 |
Is my system subject to the new finished water reservoir requirements? |
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| 141.511 |
What is required of new finished water reservoirs? |
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| 141.520 |
Is my system subject to the updated watershed control requirements? |
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| 141.521 |
What updated watershed control requirements must my unfiltered system implement to continue to avoid filtration? |
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| 141.522 |
How does the State determine whether my system's watershed control requirements are adequate? |
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| 141.530 |
What is a disinfection profile and who must develop one? |
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| 141.531 |
What criteria must a State use to determine that a profile is unnecessary? |
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| 141.532 |
How does my system develop a disinfection profile and when must it begin? |
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| 141.533 |
What data must my system collect to calculate a disinfection profile? |
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| 141.534 |
How does my system use this data to calculate an inactivation ratio? |
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| 141.535 |
What if my system uses chloramines, ozone, or chlorine dioxide for primary disinfection? |
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| 141.536 |
My system has developed an inactivation ratio; what must we do now? |
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| 141.540 |
Who has to develop a disinfection benchmark? |
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| 141.541 |
What are significant changes to disinfection practice? |
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| 141.542 |
What must my system do if we are considering a significant change to disinfection practices? |
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| 141.543 |
How is the disinfection benchmark calculated? |
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| 141.544 |
What if my system uses chloramines, ozone, or chlorine dioxide for primary disinfection? |
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| 141.550 |
Is my system required to meet subpart T combined filter effluent turbidity limits? |
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| 141.551 |
What strengthened combined filter effluent turbidity limits must my system meet? |
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| 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? |
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| 141.553 |
My system practices lime softening--is there any special provision regarding my combined filter effluent? |
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| 141.560 |
Is my system subject to individual filter turbidity requirements? |
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| 141.561 |
What happens if my system's turbidity monitoring equipment fails? |
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| 141.562 |
My system only has two or fewer filters--is there any special provision regarding individual filter turbidity monitoring? |
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| 141.563 |
What follow-up action is my system required to take based on continuous turbidity monitoring? |
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| 141.564 |
My system practices lime softening--is there any special provision regarding my individual filter turbidity monitoring? |
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| 141.570 |
What does subpart T require that my system report to the State? |
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| 141.571 |
What records does subpart T require my system to keep? |