( September 16, 2025, 5:41 PM EDT) -- WASHINGTON, D.C. — The U.S. Environmental Protection Agency has moved in the District of Columbia Circuit U.S. Court of Appeals to partially vacate its rule for per- and polyfluoroalkyl substances (PFAS) in drinking water, saying that it now agrees with two drinking water providers that sued over the rule. The EPA contends that parts of the rulemaking process were unlawful, and portions of the “PFAS National Primary Drinking Water Regulation” are “invalid” as to four types of PFAS....