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Clean Water Act › Regulatory Authority › Environmental Policies

The Clean Water Act is a United States federal statute enacted in 1972 to reduce levels of toxic substances in the nation's water supply and to prevent high levels of new contamination.  The CWA seeks to... more +
The Clean Water Act is a United States federal statute enacted in 1972 to reduce levels of toxic substances in the nation's water supply and to prevent high levels of new contamination.  The CWA seeks to accomplish its stated goals by preventing point and nonpoint pollution sources, assisting wastewater treatment facilities and maintaining wetlands. less -
ArentFox Schiff

Top 3 Supreme Court Environmental and Administrative Trends of 2025

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Within this term, the US Supreme Court’s major environmental and administrative focus was on statutory text in its environmental and administrative decisions....more

Miller Starr Regalia

The Federal Clean Water Act In 2025: A Retracting Construction

Miller Starr Regalia on

More than 50 years ago, the Federal Clean Water Act (CWA or Act) was enacted by Congress to protect the quality of the Nation’s waters. The scope of that protection has been evolving ever since. Until relatively recently, the...more

Cozen O'Connor

Republican AGs Urge EPA to Recognize Greater State Control over Waterways

Cozen O'Connor on

A group of 18 Republican AGs and the Arizona legislature submitted a comment letter in response to the EPA’s request for feedback on the definition of “waters of the United States” (WOTUS), which determines which water bodies...more

Troutman Pepper Locke

White House Issues Memorandum Directing Federal Agencies to Repeal Regulations Deemed to be Unlawful Pursuant to Recent U.S....

Troutman Pepper Locke on

On April 9, the White House issued a memorandum directing federal executive departments and agencies to repeal regulations deemed unlawful pursuant to certain U.S. Supreme Court decisions. This directive aims to address...more

Mitchell, Williams, Selig, Gates & Woodyard,...

Phosphoric Acid Production Waste/Federal Court Petition for Writ of Mandamus: Center for Biological Diversity Seeks U.S....

Mitchell, Williams, Selig, Gates & Woodyard,... on

The Center for Biological Diversity and other organizations filed a March 10th Petition for Writ of Mandamus (“Petition”) before the United States Court of Appeals for the District of Columbia Circuit asking that the United...more

Jones Day

U.S. Supreme Court Limits EPA Clean Water Act Permitting Authority

Jones Day on

On March 4, 2025, the Supreme Court of the United States issued its decision in City & County of San Francisco v. Environmental Protection Agency and clarified the U.S. Environmental Protection Agency's ("EPA") and state...more

DLA Piper

Supreme Court Limits EPA's Permitting Authority Under the Clean Water Act

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The Supreme Court recently ruled that the Clean Water Act (CWA) does not authorize the Environmental Protection Agency (EPA) to impose “generic” or “end-result” prohibitions in National Pollutant Discharge Elimination System...more

ArentFox Schiff

A Divided SCOTUS Invalidates Common Provisions of Clean Water Act Permits

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In the US Supreme Court’s first post-Chevron decision involving the US Environmental Protection Agency (EPA) the Supreme Court found against EPA, invalidating ‘end result’ NPDES permit requirements....more

Allen Matkins

California Environmental Law & Policy Update 3.7.25

Allen Matkins on

On Tuesday, in a 5-4 opinion authored by Justice Samuel Alioto, the U.S. Supreme Court issued a pivotal ruling that the Clean Water Act (CWA) provisions authorizing the U.S. Environmental Protection Agency (EPA) to impose...more

Allen Matkins

Supreme Court Says EPA has no Authority to Impose “End-Result” Requirements in Clean Water Act Permits

Allen Matkins on

On Tuesday, March 4, 2025, the Supreme Court issued an opinion in City and County of San Francisco, California v. Environmental Protection Agency, U.S. No. 23-753 in which the City and County of San Francisco (San Francisco)...more

Goldberg Segalla

Supreme Court Requires EPA to Set Specific Targets in Water Permits

Goldberg Segalla on

The U.S. Supreme Court on Tuesday, in San Francisco v. EPA, held in a 5-4 decision that the EPA cannot enforce requirements in wastewater permits that “do not spell out what a permittee must do or refrain from doing.” San...more

King & Spalding

Supreme Court Rules EPA’s Wastewater Discharge Permits May Not Include “End-Result” Provisions

King & Spalding on

In an important environmental decision, the Supreme Court narrowed the range of discharge limitations under the Clean Water Act (“CWA”) for wastewater discharges. On March 4, 2025, the U.S. Supreme Court held the CWA does not...more

Holland & Knight LLP

In San Francisco v. EPA, Supreme Court Continues Its "Righting" of the Clean Water Act

Holland & Knight LLP on

With its opinion in San Francisco v. EPA, the U.S. Supreme Court has again acted to "right" the implementation of the federal Clean Water Act by overturning a U.S. Court of Appeals for the Ninth Circuit interpretation of the...more

Holland & Knight LLP

Why EPA’s Clean Water Act Section 401 Guidance Will Have No Practical Impact on Pipeline Projects

Holland & Knight LLP on

The U.S. Environmental Protection Agency (EPA) recently announced the rollout of its new Clean Water Act Section 401 Guidance for Federal Agencies, States and Authorized Tribes which replaces an April 2010 Interim Guidance...more

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