In this proposed rulemaking, the 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 26 April 2029 to 26 April 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 7 July 2026. Comments must be received on or before 20 July 2026. POC is Alexis Lan, tele: 202-564-0841; email: PFASNPDWR@epa.gov. (Federal Register 20 May 2026 [Proposed Rule] Pages 29425-29448)