May 2025

Key Takeaways from EPA's Proposed PFAS Regulatory Changes
Today U.S. Environmental Protection Agency (EPA) Administrator Lee Zeldin announced the agency will keep the current National Primary Drinking Water Regulations (NPDWR) for perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS).  The news  came roughly one year after the agency released the first-ever NPDWR for PFAS.

EPA also acknowledged that water systems are not the polluters of PFAS as passive receivers and intends to establish a federal exemption framework, as well as the new PFAS OUTreach Initiative that will include outreach tools.

“Paired with effluent limitations guidelines (ELGs) for PFAS and other tools to ensure that polluters are held responsible, EPA’s actions are designed to reduce the burden on drinking water systems and the cost of water bills,” reads the news release.

EPA plans to issue a proposed rule this fall that will extend the compliance deadline and finalize this rule in the Spring of 2026. The details of how these proposed changes may impact the initial and compliance monitoring requirements and associated public notification deadlines are not known.

“The extension of EPA’s compliance deadline will be helpful, especially considering the 4 ppt limit that remains for PFOA and PFOS,” said CDM Smith Drinking Water Practice Leader Mark White. “Still, water utilities will need to move swiftly on PFAS treatment in order to meet these standards.”

Stay tuned to our Breaking Down PFAS newsletter for continued updates on PFAS regulation. For immediate and comprehensive compliance support, the CDM Smith team of PFAS experts is available and ready to help - reach out today.


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