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City and County of San Francisco, California v. Environmental Protection Agency
The Supreme Court held that the EPA exceeded its authority under the Clean Water Act by including 'end-result' requirements in NPDES permits that make permittees responsible for the quality of receiving waters, rather than specifying concrete steps to achieve compliance.
Supreme Court of the United States
Date Added
20 April 2026 at 19:16:29
Why it matters
Limits the EPA's ability to impose broad water quality requirements on permit holders, reinforcing the need for specific, actionable permit conditions. This ruling affects municipalities and industries subject to NPDES permits.
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