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The U.S. Environmental Protection Agency (EPA) is publishing this proposed rule to update and clarify several substantive and procedural requirements for water quality certification under Clean Water Act (CWA or the Act) section 401. CWA section 401 is a direct grant of authority to States (and Tribes that have been approved for "treatment as a State" status) to review for compliance with appropriate Federal, State, and Tribal water quality requirements any discharge into waters of the United States that may result from a proposed activity that requires a Federal license or permit. This proposed rule is intended to clarify several aspects of the certification process consistent with the statutory framework.
Published
Jan 15, 2026
Comments Close
Feb 17, 2026
Citation
91 FR 2008
Agencies
1
Full text not available in our database.
View on Federal Register →Get a plain-English explanation of what this regulation does, which agencies are responsible, and how it affects existing rules.
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EPA-HQ-OW-2025-2929
FRL-6976.2-01-OW
2040-AG47
40 CFR 121