Supreme Court Limits EPA’s Authority in San Francisco v. EPA: A Blow to Clean Water Protections?
In a landmark decision issued on March 4, 2025, the U.S. Supreme Court ruled in City and County of San Francisco v. Environmental Protection Agency that the U.S. Environmental Protection Agency (EPA) cannot impose certain types of permit requirements on entities discharging pollutants into U.S. waters. The case, which centered on the Clean Water Act (CWA), has significant implications for how the federal government regulates water pollution and protects water quality. The decision, which saw a 5-4 vote, limits the EPA’s ability to enforce “end-result” requirements in permits, raising concerns about the future of water quality standards and environmental protection.