On June 5, 2025, the U.S. Court of Appeals for the D.C. Circuit granted the EPA’s third request to continue holding in abeyance consolidated litigation challenging the agency’s national drinking water regulation for six per- and polyfluoroalkyl substances (PFAS), including PFOA and PFOS. The court’s order in American Water Works…
On May 14, 2025, EPA announced its intent to rescind the national drinking water standards for hexafluoropropylene oxide dimer acid (HFPO-DA or GenX), perfluorononanoate (PFNA), and perfluorohexanesulfonic acid (PFHxS), as well as the hazard index used to evaluate the combined risk of those compounds and perfluorobutane sulfonic acid (PFBS). These…
On April 10, 2025, at the request of the Environmental Protection Agency (EPA), the U.S. Court of Appeals for the District of Columbia Circuit extended the stay by 30 days in American Water Works Association, et al. v. EPA, No. 24-1188 (D.C. Cir. 2024) to give new leadership time to evaluate…