{"abstract":"In this proposed rulemaking, the U.S. Environmental Protection Agency (EPA) proposes a federal exemption, pursuant to Safe Drinking Water Act (SDWA) 1416(f) and 1450(a)(1), that will extend the dates of compliance with the Maximum Contaminant Levels (MCLs) for perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS) from April 26, 2029, to April 26, 2031, for those systems that submit a request. The Agency requests comment on this proposal, including the mechanisms through which the MCL compliance deadlines for PFOA and PFOS can be exempted, and has identified specific areas where public input will be helpful for the EPA in developing the final rule. In addition to seeking written input, the EPA will be holding a public hearing on July 7, 2026.","action":"Notice of proposed rule; request for public comment; notice of public hearing.","agencies":[{"raw_name":"ENVIRONMENTAL PROTECTION AGENCY","name":"Environmental Protection Agency","id":145,"url":"https://www.federalregister.gov/agencies/environmental-protection-agency","json_url":"https://www.federalregister.gov/api/v1/agencies/145","parent_id":null,"slug":"environmental-protection-agency"}],"body_html_url":"https://www.federalregister.gov/documents/full_text/html/2026/05/20/2026-10086.html","cfr_references":[{"chapter":null,"citation_url":null,"part":"142","title":40}],"citation":"91 FR 29425","comment_url":"http://www.regulations.gov/commenton/EPA-HQ-OW-2025-1742-0001","comments_close_on":"2026-06-22","correction_of":null,"corrections":[],"dates":"Comments must be received on or before July 20, 2026. Comments on the information collection provisions of the proposed rule under the Paperwork Reduction Act (PRA) must be received by the Office of Management and Budget's Office of Information and Regulatory Affairs (OMB-OIRA) on or before June 22, 2026. Please refer to the PRA section under \"Statutory and Executive Order Reviews\" in this preamble for specific instructions.","disposition_notes":null,"docket_ids":["EPA-HQ-OW-2025-1742","FRL 8543.1-01-OW"],"dockets":[{"supporting_documents":[{"title":"Efficient PFAS Removal by Amine-Functionalized Sorbents: Critical Review of the Current Literature","document_id":"EPA-HQ-OW-2025-1742-0100"},{"title":"Occupational Employment and Wage Statistics May 2020 National Industry-Specific Occupational Employment and Wage Estimates","document_id":"EPA-HQ-OW-2025-1742-0091"},{"title":"Metal-organic frameworks as platforms for the removal of per- and polyfluoroalkyl substances from contaminated waters","document_id":"EPA-HQ-OW-2025-1742-0079"},{"title":"Natural and engineered clays and clay minerals for the removal of poly- and perfluoroalkyl substances from water: State-of-the-art and future perspectives","document_id":"EPA-HQ-OW-2025-1742-0078"},{"title":"The Wealth of Nations: An Inquiry into the Nature and Causes of the Wealth of Nations","document_id":"EPA-HQ-OW-2025-1742-0065"},{"title":"Consequences of State Tax and Expenditure Limits on Local Services","document_id":"EPA-HQ-OW-2025-1742-0063"},{"title":"A Friedman doctrine - The social responsibility of business is to increase its profits","document_id":"EPA-HQ-OW-2025-1742-0060"},{"title":"Assessing the effectiveness of point-of-use residential drinking water filters for perfluoroalkyl substances (PFASs)","document_id":"EPA-HQ-OW-2025-1742-0055"},{"title":"Perfluoroalkyl and Polyfluoroalkyl Substances in the Environment: Terminology, Classification, and Origins","document_id":"EPA-HQ-OW-2025-1742-0050"},{"title":"Source Water Assessment: North Kingstown Wellhead Protection Areas","document_id":"EPA-HQ-OW-2025-1742-0048"}],"agency_name":"EPA","documents":[{"comment_count":92,"comment_start_date":"2026-05-20","updated_at":"2026-05-26T01:55:39.654-04:00","comment_url":"https://www.regulations.gov/commenton/EPA-HQ-OW-2025-1742-0001","allow_late_comments":false,"id":"EPA-HQ-OW-2025-1742-0001","comment_end_date":"2026-07-21","regulations_dot_gov_open_for_comment":true}],"supporting_documents_count":92,"id":"EPA-HQ-OW-2025-1742","title":"Extending the Compliance Deadline for the PFOA and PFOS Maximum Contaminant Levels"}],"document_number":"2026-10086","effective_on":"2026-07-20","end_page":29448,"executive_order_notes":null,"executive_order_number":null,"explanation":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2026/05/20/2026-10086.xml","html_url":"https://www.federalregister.gov/documents/2026/05/20/2026-10086/extending-the-compliance-deadline-for-the-pfoa-and-pfos-maximum-contaminant-levels","images":{},"images_metadata":{},"json_url":"https://www.federalregister.gov/api/v1/documents/2026-10086?publication_date=2026-05-20","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2026-05-20/2026-10086/mods.xml","not_received_for_publication":null,"page_length":24,"page_views":{"count":1239,"last_updated":"2026-05-26 12:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2026-05-20/pdf/2026-10086.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2026-10086.pdf?1779194712","publication_date":"2026-05-20","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2026/05/20/2026-10086.txt","regulation_id_number_info":{"2040-AG49":{"issue":"202504","html_url":"https://www.federalregister.gov/regulations/2040-AG49/extending-the-compliance-deadline-for-the-pfas-national-primary-drinking-water-regulation-rulemaking","title":"Extending the Compliance Deadline for the PFAS National Primary Drinking Water Regulation Rulemaking","xml_url":"http://www.reginfo.gov/public/do/eAgendaViewRule?pubId=202504&RIN=2040-AG49&operation=OPERATION_EXPORT_XML","priority_category":"Other Significant"}},"regulation_id_numbers":["2040-AG49"],"regulations_dot_gov_info":{"supporting_documents":[{"title":"Efficient PFAS Removal by Amine-Functionalized Sorbents: Critical Review of the Current Literature","document_id":"EPA-HQ-OW-2025-1742-0100"},{"title":"Occupational Employment and Wage Statistics May 2020 National Industry-Specific Occupational Employment and Wage Estimates","document_id":"EPA-HQ-OW-2025-1742-0091"},{"title":"Metal-organic frameworks as platforms for the removal of per- and polyfluoroalkyl substances from contaminated waters","document_id":"EPA-HQ-OW-2025-1742-0079"},{"title":"Natural and engineered clays and clay minerals for the removal of poly- and perfluoroalkyl substances from water: State-of-the-art and future perspectives","document_id":"EPA-HQ-OW-2025-1742-0078"},{"title":"The Wealth of Nations: An Inquiry into the Nature and Causes of the Wealth of Nations","document_id":"EPA-HQ-OW-2025-1742-0065"},{"title":"Consequences of State Tax and Expenditure Limits on Local Services","document_id":"EPA-HQ-OW-2025-1742-0063"},{"title":"A Friedman doctrine - 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