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Drinking Water
National Summary
Drinking water in the United States is regulated under the Safe Drinking Water Act (SDWA), which is designed to protect drinking water quality and covers both surface and groundwaters that have the potential to be used as drinking water sources. The U.S. Environmental Protection Agency (EPA) has the authority to establish and update specific standards for drinking water quality and is supported by the Centers for Disease Control and Prevention (CDC) and the Food and Drug Administration (FDA). The EPA has established specific federal limits, referred to as primary standards, for over 80 compounds that have a known or suspected potential to create health-related impacts. The EPA has also established secondary standards for nuisance-related contaminants; these standards are typically implemented voluntarily or through state rules.
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Final Regulations 40 CFR Part 141 - Drinking Water Contaminant Candidate List 5--Final 11/14/2022National
Proposed Regulations 40 CFR 131 - Water Quality Standards To Protect Human Health in Florida 12/08/2023National
Final Regulations 40 CFR 141 - Announcement of Final Regulatory Determinations for Contaminants on the Fourth Drinking Water Contaminant Candidate List 03/03/2021National
Proposed Regulations 40 CFR 141 - Announcement of Preliminary Regulatory Determinations for Contaminants on the Fourth Drinking Water Contaminant Candidate List; Extension of Comment Period 05/01/2020National
Proposed Regulations 40 CFR 141 - Announcement of Preliminary Regulatory Determinations for Contaminants on the Fourth Drinking Water Contaminant Candidate List; Proposed Rule 03/10/2020National
Proposed Regulations 40 CFR 141 - Drinking Water Contaminant Candidate List 5--Draft 07/19/2021National
Final Regulations 40 CFR 141 - Expedited Approval of Alternative Test Procedures for the Analysis of Contaminants Under the Safe Drinking Water Act 06/21/2013National
Final Regulations 40 CFR 141 - Expedited Approval of Alternative Test Procedures for the Analysis of Contaminants Under the Safe Drinking Water Act 06/27/2014National
Final Regulations 40 CFR 141 - Expedited Approval of Alternative Test Procedures for the Analysis of Contaminants Under the Safe Drinking Water Act; Analysis and Sampling Procedures 06/19/2014National
Final Regulations 40 CFR 141 - Expedited Approval of Alternative Test Procedures for the Analysis of Contaminants Under the Safe Drinking Water Act; Analysis and Sampling Procedures 10/31/2018National
Final Regulations 40 CFR 141 - Expedited Approval of Alternative Test Procedures for the Analysis of Contaminants Under the Safe Drinking Water Act; Analysis and Sampling Procedures 05/26/2021National
Final Regulations 40 CFR 141 - Expedited Approval of Alternative Test Procedures for the Analysis of Contaminants Under the Safe Drinking Water Act; Analysis and Sampling Procedures 06/02/2021National
Final Regulations 40 CFR 141 - Expedited Approval of Alternative Test Procedures for the Analysis of Contaminants Under the Safe Drinking Water Act; Analysis and Sampling Procedures 08/17/2022National
Final Regulations 40 CFR 141 - Expedited Approval of Alternative Test Procedures for the Analysis of Contaminants Under the Safe Drinking Water Act; Analysis and Sampling Procedures 01/30/2024National
Final Regulations 40 CFR 141 - Expedited Approval of Alternative Test Procedures for the Analysis of Contaminants Under the Safe Drinking Water Act; Analysis and Sampling Procedures 02/05/2024National
Final Regulations 40 CFR 141 - Expedited Approval of Alternative Test Procedures for the Analysis of Contaminants Under the SDWA 05/31/2013National
Proposed Regulations 40 CFR 141 - Lead and Copper Rule Revisions (LCRR) Virtual Engagements 06/23/2021National
Proposed Regulations 40 CFR 141 - Microbial and Disinfection Byproducts Rules: Public Meeting To Inform Potential Rule Revisions 09/30/2020National
Proposed Regulations 40 CFR 141 - National Primary Drinking Water Regulations: Lead and Copper Rule Revisions; Delay of Effective and Compliance Dates 03/12/2021National
Final Regulations 40 CFR 141 - National Primary Drinking Water Regulations: Lead and Copper Rule Revisions; Delay of Effective Date 03/12/2021National
Notices 40 CFR 141 - Notice of Public Meeting and Webinar: Revisions to the Unregulated Contaminant Monitoring Rule (UCMR 4) for Public Water Systems 05/29/2014National
Proposed Regulations 40 CFR 141 - Notice of Public Meeting: Environmental Justice Considerations for the Development of the Proposed Per- and Polyfluoroalkyl Substances (PFAS) National Primary Drinking Water Regulation (NPDWR) 02/09/2022National
Proposed Regulations 40 CFR 141 - Notice of Public Meeting: Environmental Justice Considerations for the Development of the Proposed Lead and Copper Rule Improvements (LCRI) 10/11/2022National
Final Regulations 40 CFR 141 - PFAS National Primary Drinking Water Regulation; Correction 06/11/2024National
Final Regulations 40 CFR 141 - Review of the National Primary Drinking Water Regulation: Lead and Copper Rule Revisions (LCRR) 12/17/2021National
Proposed Regulations 40 CFR 141 - Revisions to the Unregulated Contaminant Monitoring Rule (UCMR 5) for Public Water Systems and Announcement of Public Meeting 03/11/2021National
Final Regulations 40 CFR 141 - Revisions to the Unregulated Contaminant Monitoring Rule (UCMR 5) for Public Water Systems and Announcement of Public Meetings 12/27/2021National
Final Regulations 40 CFR 141 - Revisions to the Unregulated Contaminant Monitoring Rule (UCMR 5) for Public Water Systems and Announcement of Public Meetings; Technical Corrections 01/25/2022National
Proposed Regulations 40 CFR 141 - The National Drinking Water Advisory Council Microbial and Disinfection Byproducts Rule Revisions Working Group: Request for Nominations 11/11/2021National
Proposed Regulations 40 CFR 141 - The National Drinking Water Advisory Council Microbial and Disinfection Byproducts Rule Revisions Working Group: Request for Nominations 11/12/2021National
Proposed Regulations 40 CFR 141 - Unregulated Contaminant Monitoring Rule; Methods Request and Webinar 02/08/2024National
Final Regulations 40 CFR 141 and 142 - Drinking Water: Final Action on Perchlorate 07/21/2020National
Final Regulations 40 CFR 141 and 142 - Final Regulation to Make Minor Corrections to the Total Coliform Rule 02/26/2014National
Notices 40 CFR 141 and 142 - Long Term 2 Enhanced Surface Water Treatment Rule: Public Meeting on Monitoring Data Analysis, Occurrence Forecasts, Binning, and the Microbial Toolbox 09/18/2012National
Proposed Regulations 40 CFR 141 and 142 - National Primary Drinking Water Regulations for Lead and Copper: Improvements (LCRI); Proposed Rule 12/06/2023National
Proposed Regulations 40 CFR 141 and 142 - National Primary Drinking Water Regulations: Consumer Confidence Report Rule Revisions 04/05/2023National
Final Regulations 40 CFR 141 and 142 - National Primary Drinking Water Regulations: Consumer Confidence Reports; Final Rule 05/24/2024National
Proposed Regulations 40 CFR 141 and 142 - National Primary Drinking Water Regulations: Lead and Copper Rule Revisions 12/19/2019National
Final Regulations 40 CFR 141 and 142 - National Primary Drinking Water Regulations: Lead and Copper Rule Revisions; Delay of Effective and Compliance Dates 06/16/2021National
Final Regulations 40 CFR 141 and 142 - National Primary Drinking Water Regulations: Revisions to the Total Coliform Rule 02/13/2013National