In proposing the first legally enforceable federal limits on per- and poly-fluoroalkyl substances (PFAS) in drinking water, the U.S. Environmental Protection Agency (EPA) said it is fulfilling a foundational commitment in its PFAS strategic roadmap, the EPA's comprehensive plan for addressing PFAS through 2024. The roadmap is a three-pronged plan of action that includes research, restrictions and remediation. On March 29, the EPA officially proposed nationwide restrictions to limit the presence of six PFAS in drinking water through a proposed National Primary Drinking Water Regulation (NPDWR). The EPA invited public comment through May 30 and anticipates finalizing the NPDWR by year end. As proposed, public water systems (PWS) would have three years after finalization to demonstrate compliance.