The Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) has entered a new era with the U.S. Environmental Protection Agency’s (EPA) recent designation of certain per- and polyfluoroalkyl substances (PFAS), or “forever chemicals,” as hazardous substances. Announced on April 19, 2024, and entered into force on July 8, 2024, this designation represents a shift in the environmental law landscape.