The Washington Department of Ecology (WDOE) issued a proposed rule on June 4, 2025, that would regulate per- and polyfluoroalkyl substances (PFAS) in certain consumer products. Beginning January 1, 2027, the proposed rule would prohibit the intentional use of PFAS in: The proposed rule states that WDOE would presume the detection of total fluorine indicates the intentional addition of PFAS. Manufacturers would be able to rebut this presumption by submitting a statement to WDOE that...