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40 CFR 141.511 · What is required of new finished water reservoirs?
40 CFR 141.520 · Is my system subject to the updated watershed control requirements?
40 CFR 141.521 · What updated watershed control requirements must my unfiltered system implement to continue to avoid filtration?
40 CFR 141.522 · How does the State determine whether my system's watershed control requirements are adequate?
40 CFR 141.530 · What is a disinfection profile and who must develop one?
40 CFR 141.531 · What criteria must a State use to determine that a profile is unnecessary?
40 CFR 141.532 · How does my system develop a disinfection profile and when must it begin?
40 CFR 141.533 · What data must my system collect to calculate a disinfection profile?
40 CFR 141.534 · How does my system use this data to calculate an inactivation ratio?
40 CFR 141.535 · What if my system uses chloramines, ozone, or chlorine dioxide for primary disinfection?
40 CFR 141.536 · My system has developed an inactivation ratio; what must we do now?
40 CFR 141.540 · Who has to develop a disinfection benchmark?
40 CFR 141.541 · What are significant changes to disinfection practice?
40 CFR 141.542 · What must my system do if we are considering a significant change to disinfection practices?
40 CFR 141.543 · How is the disinfection benchmark calculated?
40 CFR 141.544 · What if my system uses chloramines, ozone, or chlorine dioxide for primary disinfection?
40 CFR 141.550 · Is my system required to meet subpart T combined filter effluent turbidity limits?
40 CFR 141.551 · What strengthened combined filter effluent turbidity limits must my system meet?
40 CFR 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?
40 CFR 141.553 · My system practices lime softening—is there any special provision regarding my combined filter effluent?
40 CFR 141.560 · Is my system subject to individual filter turbidity requirements?
40 CFR 141.561 · What happens if my system's turbidity monitoring equipment fails?
40 CFR 141.562 · My system only has two or fewer filters—is there any special provision regarding individual filter turbidity monitoring?
40 CFR 141.563 · What follow-up action is my system required to take based on continuous turbidity monitoring?
40 CFR 141.564 · My system practices lime softening—is there any special provision regarding my individual filter turbidity monitoring?
40 CFR 141.570 · What does subpart T require that my system report to the State?
40 CFR 141.571 · What records does subpart T require my system to keep?
40 CFR 141.600 · General requirements.
40 CFR 141.601 · Standard monitoring.
40 CFR 141.602 · System specific studies.
40 CFR 141.603 · 40/30 certification.
40 CFR 141.604 · Very small system waivers.
40 CFR 141.605 · Subpart V compliance monitoring location recommendations.
40 CFR 141.620 · General requirements.
40 CFR 141.621 · Routine monitoring.
40 CFR 141.622 · Subpart V monitoring plan.
40 CFR 141.623 · Reduced monitoring.
40 CFR 141.624 · Additional requirements for consecutive systems.
40 CFR 141.625 · Conditions requiring increased monitoring.
40 CFR 141.626 · Operational evaluation levels.
40 CFR 141.627 · Requirements for remaining on reduced TTHM and HAA5 monitoring based on subpart L results.
40 CFR 141.628 · Requirements for remaining on increased TTHM and HAA5 monitoring based on subpart L results.
40 CFR 141.629 · Reporting and recordkeeping requirements.
40 CFR 141.700 · General requirements.
40 CFR 141.701 · Source water monitoring.
40 CFR 141.702 · Sampling schedules.
40 CFR 141.703 · Sampling locations.
40 CFR 141.704 · Analytical methods.
40 CFR 141.705 · Approved laboratories.
40 CFR 141.706 · Reporting source water monitoring results.
40 CFR 141.707 · Grandfathering previously collected data.
40 CFR 141.708 · Requirements when making a significant change in disinfection practice.
40 CFR 141.709 · Developing the disinfection profile and benchmark.
40 CFR 141.710 · Bin classification for filtered systems.
40 CFR 141.711 · Filtered system additional Cryptosporidium treatment requirements.
40 CFR 141.712 · Unfiltered system Cryptosporidium treatment requirements.
40 CFR 141.713 · Schedule for compliance with Cryptosporidium treatment requirements.
40 CFR 141.714 · Requirements for uncovered finished water storage facilities.
40 CFR 141.715 · Microbial toolbox options for meeting Cryptosporidium treatment requirements.
40 CFR 141.716 · Source toolbox components.
40 CFR 141.717 · Pre-filtration treatment toolbox components.
40 CFR 141.718 · Treatment performance toolbox components.
40 CFR 141.719 · Additional filtration toolbox components.
40 CFR 141.720 · Inactivation toolbox components.
40 CFR 141.721 · Reporting requirements.
40 CFR 141.722 · Recordkeeping requirements.
40 CFR 141.723 · Requirements to respond to significant deficiencies identified in sanitary surveys performed by EPA.
40 CFR 141.800 · Applicability and compliance date.
40 CFR 141.801 · Definitions.
40 CFR 141.802 · Coliform sampling plan.
40 CFR 141.803 · Coliform sampling.
40 CFR 141.804 · Aircraft water system operations and maintenance plan.
40 CFR 141.805 · Notification to passengers and crew.
40 CFR 141.806 · Reporting requirements.
40 CFR 141.807 · Recordkeeping requirements.
40 CFR 141.808 · Audits and inspections.
40 CFR 141.809 · Supplemental treatment.
40 CFR 141.810 · Violations.
40 CFR 141.851 · General.
40 CFR 141.852 · Analytical methods and laboratory certification.
40 CFR 141.853 · General monitoring requirements for all public water systems.
40 CFR 141.854 · Routine monitoring requirements for non-community water systems serving 1,000 or fewer people using only ground water.
40 CFR 141.855 · Routine monitoring requirements for community water systems serving 1,000 or fewer people using only ground water.
40 CFR 141.856 · Routine monitoring requirements for subpart H public water systems serving 1,000 or fewer people.
40 CFR 141.857 · Routine monitoring requirements for public water systems serving more than 1,000 people.
40 CFR 141.858 · Repeat monitoring and E. coli requirements.
40 CFR 141.859 · Coliform treatment technique triggers and assessment requirements for protection against potential fecal contamination.
40 CFR 141.860 · Violations.
40 CFR 141.861 · Reporting and recordkeeping.
40 CFR 141.900 · General requirements.
40 CFR 141.901 · Analytical requirements.
40 CFR 141.902 · Monitoring requirements.
40 CFR 141.903 · Compliance requirements.
40 CFR 141.904 · Reporting and recordkeeping requirements.
40 CFR 141.905 · Violations.
40 CFR 142.1 · Applicability.
40 CFR 142.2 · Definitions.
40 CFR 142.3 · Scope.
40 CFR 142.4 · State and local authority.
40 CFR 142.10 · Requirements for a determination of primary enforcement responsibility.