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Waters of the United States

  • EPA and the Army Issue Final Rule to Amend 2023 Rule

    On August 29, 2023, the U.S. Environmental Protection Agency and the U.S. Army Corps of Engineers issued a final rule that amends the "Revised Definition of 'Waters of the United States'" to conform key aspects of the regulatory text to the U.S. Supreme Court's May 25, 2023 decision in the case of Sackett v. Environmental Protection Agency. The conforming rule, "Revised Definition of 'Waters of the United States'; Conforming," published in the Federal Register and became effective on September 8, 2023. 

    Read the press release. 

    More information about the final conforming rule can be found here.

    Read the decision.

  • EPA and Army Host 10 Implementation-Focused Roundtables to Highlight Regional Implications of WOTUS

    These roundtables allowed stakeholders to engage and discuss their experiences with implementing the definition of "waters of the United States," including challenges and opportunities within their geographic areas.

    More information about the Roundtables can be found here.

About Waters of the U.S.

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  • About Waters of the United States
  • Programs Utilizing the Definition of Waters of the United States

Implementation

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  • Current Definition of Waters of the United States
  • Rule and Litigation Status
    • Pre-2015 Regulatory Regime
  • Coordination Process and Field Memoranda
  • Implementation Tools and Methods

Current Activities

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  • Amendments to the 2023 Rule
  • Revising the Definition of "Waters of the United States"
  • Public Outreach and Stakeholder Engagement Activities
Contact Us about Waters of the United States to ask a question, provide feedback, or report a problem.
Last updated on November 13, 2024
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