News & Analysis as of

Water Quality Statutory Interpretation NPDES

Tonkon Torp LLP

U.S. Supreme Court Limits EPA Discretion in Landmark NPDES Permit Decision

Tonkon Torp LLP on

The Supreme Court’s recent decision in City and County of San Francisco v. Environmental Protection Agency, (EPA) 604 U.S. ____ (2025) significantly alters the regulatory landscape for NPDES permits under the Clean Water Act...more

Greenberg Glusker LLP

Supreme Court Narrows EPA’s Authority to Set Limitations in Clean Water Act Permits

Greenberg Glusker LLP on

On March 4, 2025, the Supreme Court issued its opinion in City and County of San Francisco v. Environmental Protection Agency, holding that EPA does not have the authority to issue “end-result” requirements in National...more

Dickinson Wright

Supreme Court Limits EPA's Power Over NPDES Water Permits

Dickinson Wright on

In a much-anticipated decision, the U.S. Supreme Court significantly narrowed the EPA's authority under the Clean Water Act (CWA) to impose so-called "end-result" requirements in NPDES permits. These "end-result" requirements...more

Kelley Drye & Warren LLP

Supreme Court Strikes Down ​“End-Result” Requirements in NPDES Permits

On March 4, 2025, the U.S. Supreme Court issued a ruling that prohibits the U.S. Environmental Protection Agency (“EPA” or ​“the Agency”) from setting qualitative limits based on the condition of the ​“receiving waters” that...more

Nossaman LLP

City and County of San Francisco vs. EPA: Implications for Clean Water Act Permittees

Nossaman LLP on

On March 4, 2025, the U.S. Supreme Court issued its opinion in the case City and County of San Francisco v. Environmental Protection Agency, in which it held that “end-result” requirements routinely imposed by the U.S....more

(ACOEL) | American College of Environmental...

Oh, Congress Forgot The Science

In an ACOEL blog posted on July 27, 2021, Seth Jaffe expressed his support for the Supreme Court’s majority opinion in the Maui case and the subsequent ruling by the District Court. In Maui, the Supreme Court held that an...more

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