EPA Releases Proposal to Designate Certain PFAS as Hazardous Substances by ACWA Staff Aug 26, 2022 Water News WASHINGTON, D.C. – The Environmental Protection Agency (EPA) today released a pre-publication notice proposing to designate PFOA and PFOS as hazardous substances under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). EPA will officially publish the proposed rule in the Federal Register in the next several weeks. Once published in the Federal Register, a 60-day comment period will commence. ACWA will submit comments once the comment period opens. Additionally, EPA expects to issue another proposed rule after the close of this comment period to seek public input on designating other PFAS chemicals as CERCLA hazardous substances. For questions regarding PFAS, please contact Federal Relations Representative Madeline Voitier.