The Environmental Protection Agency (EPA) has proposed new rules that would add PFAS chemicals to the list of hazardous substances covered under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). If these new rules take effect, they will have dramatic impacts, both on consumers and public utilities. Although the EPA has made addressing the issue of PFAS chemicals a priority, the agency may be underestimating the downstream impacts of its proposed regulations. Both companies and consumers may feel the pinch of sharply increased costs as a result of these new rules.