Center for Biological Diversity
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
Center for Biological Diversity filings
11

Activity

Center for Biological Diversity filed 11 comments on this docket between Nov 21, 2025 and Jan 12, 2026. 271 other organizations filed here. The comment window closed 204d ago.

What Center for Biological Diversity filed (11)

Jan 12, 2026· Comment submitted by Center for Biological Diversity (part 9 of 10)· EPA-HQ-OW-2025-0322-1026

The Center for Biological Diversity files the attached comments and supporting attachments in opposition to the proposed rule. #9

Jan 12, 2026· Comment submitted by Center for Biological Diversity (part 8 of 10)· EPA-HQ-OW-2025-0322-1025

The Center for Biological Diversity files the attached comments and supporting attachments in opposition to the proposed rule. #8

Jan 12, 2026· Comment submitted by Center for Biological Diversity (part 10 of 10)· EPA-HQ-OW-2025-0322-1027

See attached file(s)The Center for Biological Diversity files the attached comments and supporting attachments in opposition to the proposed rule. #10

Jan 12, 2026· Comment submitted by Center for Biological Diversity (part 1 of 10)· EPA-HQ-OW-2025-0322-1019

The Center for Biological Diversity files the attached comments and supporting attachments in opposition to the proposed rule. #1

Jan 12, 2026· Comment submitted by Center for Biological Diversity (part 2 of 10)· EPA-HQ-OW-2025-0322-1020

The Center for Biological Diversity files the attached comments and supporting attachments in opposition to the proposed rule. #2

Jan 12, 2026· Comment submitted by Center for Biological Diversity (part 3 of 10)· EPA-HQ-OW-2025-0322-1021

The Center for Biological Diversity files the attached comments and supporting attachments in opposition to the proposed rule. #3

Jan 12, 2026· Comment submitted by Center for Biological Diversity (part 5 of 10)· EPA-HQ-OW-2025-0322-1022

The Center for Biological Diversity files the attached comments and supporting attachments in opposition to the proposed rule. #5

Jan 12, 2026· Comment submitted by Center for Biological Diversity (part 6 of 10)· EPA-HQ-OW-2025-0322-1023

The Center for Biological Diversity files the attached comments and supporting attachments in opposition to the proposed rule. #6

Jan 12, 2026· Comment submitted by Center for Biological Diversity (part 7 of 10)· EPA-HQ-OW-2025-0322-1024

The Center for Biological Diversity files the attached comments and supporting attachments in opposition to the proposed rule. #7

Jan 6, 2026· Comment submitted by Center for Biological Diversity· EPA-HQ-OW-2025-0322-0478

The Center for Biological Diversity files the attached comments and supporting attachments in opposition to the proposed rule. #4

Nov 21, 2025· Comment submitted by Center for Biological Diversity· EPA-HQ-OW-2025-0322-0132

As further discussed in the attached letter, on behalf of the Center for Biological Diversity, I hereby request a 60-day extension of the comment period for the above-cited Proposed Rule, which proposes to significantly change and dramatically constrict the Federal government's interpretation of the term "waters of the United States" (WOTUS) under the Clean Water Act. If not extended, the comment period will end on January 5, 2026, and will encompass several holidays during which most members of the public, technical experts, and other key stakeholders will not have sufficient time to review or participate meaningfully.

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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