The potential implementation of the Heritage Foundation’s Project 2025 policy manual for a Republican administration threatens to undo or significantly slow the progress EPA has made in regulating PFAS by calling for the revision of Superfund designations and eliminating key research programs that underlie drinking water rules, a group representing former officials says. “Project 2025 will stop or delay all EPA actions to prevent, control, remediate, and research [per- and polyfluoroalkyl substances (PFAS)],” Betsy Southerland, a former EPA water and...