The US Environmental Protection Agency (EPA) office responsible for protecting the public from toxic substances has changed how it defines PFAS for a second time since 2021, a move critics say they fear will exclude thousands of “forever chemicals” from regulation and largely benefit industry.
Instead of using a clear definition of what constitutes a PFAS, the agency’s Office of Pollution Prevention and Toxics plans to take a “case-by-case” approach that allows it to be more flexible in determining which chemicals should be subjected to regulations.
