Listing of PFOA, PFOS, PFBS, and GenX as Resource Conservation and Recovery Act (RCRA) Hazardous Constituents

Based on public health and environmental protection concerns and in response to several petitions which requested EPA to take regulatory action on PFAS under RCRA, EPA is evaluating the existing toxicity and health effects data on four PFAS constituents to determine if they should be listed as RCRA Hazardous Constituents. If the existing data for the four PFAS constituents support listing any or all of these constituents as RCRA hazardous constituents, EPA will propose to list the constituents in a Federal Register notice for public comment. The four PFAS chemicals EPA will evaluate are: perfluorooctanoic acid (PFOA), perfluorooctane sulfonic acid (PFOS), perfluorobutane sulfonic acid (PFBS), hexafluoropropylene oxide dimer acid (HFPO-DA or GenX).