EPA Webinar – Assessing the Toxicity of PFAS Chemicals to Aquatic Organisms

Register Here For more information on this event, visit the U.S. EPA Water Research webpage. Among the many questions surrounding per- or polyfluoroalkyl substances (PFAS) are their potential effects on aquatic communities. While much of the initial research effort has focused on ecological effects of perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA), there is a much wider range of PFAS that can occur in the environment―both as a result of more recently developed compounds and the breakdown products of other PFAS. Effective management of PFAS in aquatic systems requires understanding of the potential effects of a more complete range of PFAS chemicals. EPA is working to explore the relationships between PFAS toxicity and chemical structure for several aquatic species to help identify and predict the toxicity of PFAS and PFAS…
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EPA Adds Four New PFAS to Toxic Release Inventory

National News, Research
By Joseph Zaleski and Samuel Boxerman; Sidley Energy Blog As part of its continued focus on per- and polyfluoroalkyl substances (PFAS) regulations, the U.S. Environmental Protection Agency (EPA) has added four PFAS substances to the Toxics Release Inventory (TRI) list, including PFBS (perfluorobutane sulfonic acid) and potassium perfluorobutane sulfonate as well as two compounds listed at by their chemical identifier numbers — CASRN 65104-45-2 and CASRN 203743-03-7. EPA’s decision to add these PFAS to the TRI requires facilities that manufacture, process, or otherwise use these PFAS chemicals to include them in annual reports made to EPA pursuant to the Emergency Planning and Community Right-to-Know Act starting this reporting year. The 2020 National Defense Authorization Act (NDAA) immediately added 172 PFAS chemicals to the TRI and required annual facility reporting. The NDAA also provided…
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