Code of Federal Regulations (alpha)

CFR /  Title 40  /  Part 141: National Primary Drinking Water Regulations

Section No. Description
Section 141.1 Definitions
Section 141.2 Coverage
Section 141.3 Variances and exemptions
Section 141.4 Siting requirements
Section 141.5 Effective dates
Section 141.6 Maximum contaminant levels for inorganic chemicals
Section 141.11 Maximum contaminant levels for turbidity
Section 141.13 Coliform sampling
Section 141.21 Turbidity sampling and analytical requirements
Section 141.22 Inorganic chemical sampling and analytical requirements
Section 141.23 Organic chemicals, sampling and analytical requirements
Section 141.24 Analytical methods for radioactivity
Section 141.25 Monitoring frequency and compliance requirements for radionuclides in community water systems
Section 141.26 Alternate analytical techniques
Section 141.27 Certified laboratories
Section 141.28 Monitoring of consecutive public water systems
Section 141.29 Reporting requirements
Section 141.31 Record maintenance
Section 141.33 Reporting for unregulated contaminant monitoring results
Section 141.35 Monitoring requirements for unregulated contaminants
Section 141.40 Special monitoring for sodium
Section 141.41 Special monitoring for corrosivity characteristics
Section 141.42 Prohibition on use of lead pipes, solder, and flux
Section 141.43 Maximum contaminant level goals for organic contaminants
Section 141.50 Maximum contaminant level goals for inorganic contaminants
Section 141.51 Maximum contaminant level goals for microbiological contaminants
Section 141.52 Maximum contaminant level goals for disinfection byproducts
Section 141.53 Maximum residual disinfectant level goals for disinfectants
Section 141.54 Maximum contaminant level goals for radionuclides
Section 141.55 Effective dates
Section 141.60 Maximum contaminant levels for organic contaminants
Section 141.61 Maximum contaminant levels for inorganic contaminants
Section 141.62 Maximum contaminant levels (MCLs) for microbiological contaminants
Section 141.63 Maximum contaminant levels for disinfection byproducts
Section 141.64 Maximum residual disinfectant levels
Section 141.65 Maximum contaminant levels for radionuclides
Section 141.66 General requirements
Section 141.70 Criteria for avoiding filtration
Section 141.71 Disinfection
Section 141.72 Filtration
Section 141.73 Analytical and monitoring requirements
Section 141.74 Reporting and recordkeeping requirements
Section 141.75 Recycle provisions
Section 141.76 General requirements
Section 141.80 Applicability of corrosion control treatment steps to small, medium-size and large water systems
Section 141.81 Description of corrosion control treatment requirements
Section 141.82 Source water treatment requirements
Section 141.83 Lead service line replacement requirements
Section 141.84 Public education and supplemental monitoring requirements
Section 141.85 Monitoring requirements for lead and copper in tap water
Section 141.86 Monitoring requirements for water quality parameters
Section 141.87 Monitoring requirements for lead and copper in source water
Section 141.88 Analytical methods
Section 141.89 Reporting requirements
Section 141.90 Recordkeeping requirements
Section 141.91 Criteria and procedures for public water systems using point-of-entry devices
Section 141.100 Use of bottled water
Section 141.101 General requirements
Section 141.110 Treatment techniques for acrylamide and epichlorohydrin
Section 141.111 General requirements
Section 141.130 Analytical requirements
Section 141.131 Monitoring requirements
Section 141.132 Compliance requirements
Section 141.133 Reporting and recordkeeping requirements
Section 141.134 Treatment technique for control of disinfection byproduct (DBP) precursors
Section 141.135 Purpose and applicability of this subpart
Section 141.151 Effective dates
Section 141.152 Content of the reports
Section 141.153 Required additional health information
Section 141.154 Report delivery and recordkeeping
Section 141.155 General requirements
Section 141.170 Criteria for avoiding filtration
Section 141.171 Disinfection profiling and benchmarking
Section 141.172 Filtration
Section 141.173 Filtration sampling requirements
Section 141.174 Reporting and recordkeeping requirements
Section 141.175 General public notification requirements
Section 141.201 Tier 1 Public Notice--Form, manner, and frequency of notice
Section 141.202 Tier 2 Public Notice--Form, manner, and frequency of notice
Section 141.203 Tier 3 Public Notice--Form, manner, and frequency of notice
Section 141.204 Content of the public notice
Section 141.205 Notice to new billing units or new customers
Section 141.206 Special notice of the availability of unregulated contaminant monitoring results
Section 141.207 Special notice for exceedance of the SMCL for fluoride
Section 141.208 Special notice for nitrate exceedances above MCL by non-community water systems (NCWS), where granted permission
Section 141.209 Notice by primacy agency on behalf of the public water system
Section 141.210 Special notice for repeated failure to conduct monitoring of the source water for Cryptosporidium and for
Section 141.211 General requirements and applicability
Section 141.400 Sanitary surveys for ground water systems
Section 141.401 Ground water source microbial monitoring and analytical methods
Section 141.402 Treatment technique requirements for ground water systems
Section 141.403 Treatment technique violations for ground water systems
Section 141.404 Reporting and recordkeeping for ground water systems
Section 141.405 General requirements
Section 141.500 Who is subject to the requirements of subpart T?
Section 141.501 When must my system comply with these requirements?
Section 141.502 What does subpart T require?
Section 141.503 Is my system subject to the new finished water reservoir requirements?
Section 141.510 What is required of new finished water reservoirs?
Section 141.511 Is my system subject to the updated watershed control requirements?
Section 141.520 What updated watershed control requirements must my unfiltered system implement to continue to avoid filtration?
Section 141.521 How does the State determine whether my system's watershed control requirements are adequate?
Section 141.522 What is a disinfection profile and who must develop one?
Section 141.530 What criteria must a State use to determine that a profile is unnecessary?
Section 141.531 How does my system develop a disinfection profile and when must it begin?
Section 141.532 What data must my system collect to calculate a disinfection profile?
Section 141.533 How does my system use this data to calculate an inactivation ratio?
Section 141.534 What if my system uses chloramines, ozone, or chlorine dioxide for primary disinfection?
Section 141.535 My system has developed an inactivation ratio; what must we do now?
Section 141.536 Who has to develop a disinfection benchmark?
Section 141.540 What are significant changes to disinfection practice?
Section 141.541 What must my system do if we are considering a significant change to disinfection practices?
Section 141.542 How is the disinfection benchmark calculated?
Section 141.543 What if my system uses chloramines, ozone, or chlorine dioxide for primary disinfection?
Section 141.544 Is my system required to meet subpart T combined filter effluent turbidity limits?
Section 141.550 What strengthened combined filter effluent turbidity limits must my system meet?
Section 141.551 My system consists of ``alternative filtration'' and is required to conduct a demonstration--what is required of
Section 141.552 My system practices lime softening--is there any special provision regarding my combined filter effluent?
Section 141.553 Is my system subject to individual filter turbidity requirements?
Section 141.560 What happens if my system's turbidity monitoring equipment fails?
Section 141.561 My system only has two or fewer filters--is there any special provision regarding individual filter turbidity
Section 141.562 What follow-up action is my system required to take based on continuous turbidity monitoring?
Section 141.563 My system practices lime softening--is there any special provision regarding my individual filter turbidity
Section 141.564 What does subpart T require that my system report to the State?
Section 141.570 What records does subpart T require my system to keep?
Section 141.571 General requirements
Section 141.600 Standard monitoring
Section 141.601 System specific studies
Section 141.602 Very small system waivers
Section 141.604 Subpart V compliance monitoring location recommendations
Section 141.605 General requirements
Section 141.620 Routine monitoring
Section 141.621 Subpart V monitoring plan
Section 141.622 Reduced monitoring
Section 141.623 Additional requirements for consecutive systems
Section 141.624 Conditions requiring increased monitoring
Section 141.625 Operational evaluation levels
Section 141.626 Requirements for remaining on reduced TTHM and HAA5 monitoring based on subpart L results
Section 141.627 Requirements for remaining on increased TTHM and HAA5 monitoring based on subpart L results
Section 141.628 Reporting and recordkeeping requirements
Section 141.629 General requirements
Section 141.700 Source water monitoring
Section 141.701 Sampling schedules
Section 141.702 Sampling locations
Section 141.703 Analytical methods
Section 141.704 Approved laboratories
Section 141.705 Reporting source water monitoring results
Section 141.706 Grandfathering previously collected data
Section 141.707 Requirements when making a significant change in disinfection practice
Section 141.708 Developing the disinfection profile and benchmark
Section 141.709 Bin classification for filtered systems
Section 141.710 Filtered system additional Cryptosporidium treatment requirements
Section 141.711 Unfiltered system Cryptosporidium treatment requirements
Section 141.712 Schedule for compliance with Cryptosporidium treatment requirements
Section 141.713 Requirements for uncovered finished water storage facilities
Section 141.714 Microbial toolbox options for meeting Cryptosporidium treatment requirements
Section 141.715 Source toolbox components
Section 141.716 Pre-filtration treatment toolbox components
Section 141.717 Treatment performance toolbox components
Section 141.718 Additional filtration toolbox components
Section 141.719 Inactivation toolbox components
Section 141.720 Reporting requirements
Section 141.721 Recordkeeping requirements
Section 141.722 Requirements to respond to significant deficiencies identified in sanitary surveys performed by EPA
Section 141.723 Applicability and compliance date
Section 141.800 Definitions
Section 141.801 Coliform sampling plan
Section 141.802 Coliform sampling
Section 141.803 Aircraft water system operations and maintenance plan
Section 141.804 Notification to passengers and crew
Section 141.805 Reporting requirements
Section 141.806 Recordkeeping requirements
Section 141.807 Audits and inspections
Section 141.808 Supplemental treatment
Section 141.809 Violations
Section 141.810 General
Section 141.851 Analytical methods and laboratory certification
Section 141.852 General monitoring requirements for all public water systems
Section 141.853 Routine monitoring requirements for non-community water systems serving 1,000 or fewer people using only ground water
Section 141.854 Routine monitoring requirements for community water systems serving 1,000 or fewer people using only ground water
Section 141.855 Routine monitoring requirements for subpart H public water systems serving 1,000 or fewer people
Section 141.856 Routine monitoring requirements for public water systems serving more than 1,000 people
Section 141.857 Repeat monitoring and E
Section 141.858 Coliform treatment technique triggers and assessment requirements for protection against potential fecal contamination
Section 141.859 Violations
Section 141.860 Reporting and recordkeeping
Section 141.861 Applicability