All Knowledge & Insights By Date

On May 18, 2026, the U.S. Environmental Protection Agency (EPA) announced two proposed rules. The first proposed rule would uphold the federal drinking water Maximum Contaminant Levels (MCL) for perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS) while providing an option for drinking water systems to request two additional years to comply with the enforceable limits. The second proposed rule would rescind the regulatory determinations and regulations for perfluorohexane...

On June 2, 2025, the United Kingdom (UK) Department for Environment, Food & Rural Affairs (Defra) requested comment on a draft indicative list for long-chain perfluorocarboxylic acids (LC-PFCA), their salts, and related compounds. According to Defra, at the 20th meeting of the Persistent Organic Pollutants (POP) Review Committee of the Stockholm Convention on POPs, the Committee recommended listing LC-PFCAs, their salts, and related compounds in Annex A of the Convention, allowing for...

On April 19, 2024, the U.S. Environmental Protection Agency (EPA) announced a final rule that will designate perfluorooctanoic acid (PFOA), perfluorooctanesulfonic acid (PFOS), and their salts and structural isomers as hazardous substances under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). EPA states that under the rule, entities are required to report immediately releases of PFOA and PFOS that meet or exceed the reportable quantity (RQ) of one pound within...