American Chemistry Council
EPARulemakingEPA-HQ-OW-2025-0322

Updated Definition of Waters of the United States

RIN
2040-AG44
Last modified
Jun 30, 2026
Comment window
closed 204d ago
American Chemistry Council filings
1

Activity

American Chemistry Council filed 1 comment on this docket between Jan 8, 2026 and Jan 8, 2026. 271 other organizations filed here. The comment window closed 204d ago.

What American Chemistry Council filed (1)

Jan 8, 2026· Comment submitted by American Chemistry Council (ACC)· EPA-HQ-OW-2025-0322-0822

Please see the attached comment letter on behalf of the American Chemistry Council.

Abstract

The U.S. Environmental Protection Agency and the U.S. Department of the Army are undertaking a rulemaking to revise the regulations defining the scope of waters federally covered under the Clean Water Act in light of the Supreme Court’s decision in Sackett v. Environmental Protection Agency, 598 U.S. 651 (2023). With this proposed rule, the agencies intend to provide greater regulatory certainty and increase Clean Water Act program predictability and consistency by clarifying the definition of “waters of the United States.” Related Dockets: EPA-HQ-OW-2025-0093; EPA-HQ-OW-2021-0602; EPA-HQ-OW-2023-0346

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Updated Definition of Waters of the United States (EPA) — American Chemistry Council | OpenPolis