Waters of the United States

EPA and the Army Announce Proposed Rule: Updated Definition of "Waters of the United States"

On November 17, 2025, the U.S. Environmental Protection Agency and the U.S. Department of the Army announced a proposed rule that would clarify the definition of "waters of the United States" and fully implement the U.S. Supreme Court's decision in Sackett v. Environmental Protection Agency. Upon publication in the Federal Register, the proposed rule will be open for a 45-day public comment period. 

Read the pre-publication version of the proposed rule (PDF).

Read the press release. 

Read the public fact sheet (PDF).

Read the agricultural fact sheet (PDF).

Learn more information about the proposed rule.

EPA and Army Announce Guidance and a "WOTUS Notice: The Final Response to SCOTUS"

On March 12, 2025, the U.S. Environmental Protection Agency and Department of the Army announced a joint memorandum issuing guidance to field staff on implementation of “continuous surface connection” consistent with the U.S. Supreme Court’s May 25, 2023, decision in the case of Sackett v. Environmental Protection Agency. The agencies also announced a Federal Register notice publicizing a series of six listening sessions and a 30-day recommendations docket to solicit feedback on key aspects of the definition of “waters of the United States.”

Read the joint guidance on continuous surface connection (pdf).

Read the Federal Register notice (pdf).

Read the press release.

Read written recommendations.