Laws & Regulations

Navigable Waters Protection Rule

Information about EPA and Army actions regarding the development of a rule to redefine waters of the United States

Report: Quality Control Review of Bacon & Company’s Fiscal Year 2022 Single Audit of the Narragansett Bay Commission

Revising the Definition of "Waters of the United States"

Information regarding effort to Revise the Definition of Waters of the United States, the NOI to review and replace the NWPR, as well as EO 13990

Report: Independent Audit of the EPA’s Fiscal Years 2023 and 2022 (Restated) Pesticide Registration Fund Financial Statements

Frequent Questions on the WOTUS Proposed Rule

Q&As on the Proposed Rule "Updated Definition of 'Waters of the United States'"

Pre-2015 Regulatory Regime

Background on the pre-2015 regulatory regime for the definition of "waters of the United States"

Coordination Process for Approved Jurisdictional Determinations and Field Memoranda

Coordination Process for Approved Jurisdictional Determinations and WOTUS Field Memoranda

Report: Management Implication Report: Office of Research and Development Scientific Integrity and Ethics Concerns

Definition of "Waters of the United States": Rule Status and Litigation Update

Webpage giving updates regarding the litigation on WOTUS and the definition that applies in light of that litigation

Amendments to the 2023 Rule

Amendments to the 2023 Rule "Revised Definition of 'Waters of the United States'"

Current Implementation of Waters of the United States

Information about EPA and Army actions regarding the development of a rule to redefine waters of the United States

About Waters of the United States

Legal background and current implementation of the definition of Waters of the United States

Report: Accessing Superfund Five-Year Reviews Listed in the EPA’s Annual Reports to Congress

Report: Independent Audit of the EPA’s Fiscal Years 2023 and 2022 (Restated) Pesticides Registration and Expedited Processing Fund Financial Statements

Report: IIndependent Audit of the EPA’s Fiscal Years 2023 and 2022 Hazardous Waste Electronic Manifest System Fund Financial Statements

Report: Independent Audit of the EPA’s Fiscal Years 2022 and 2021 (Restated) Toxic Substances Control Act Service Fee Fund Financial Statements

Report: EPA Guidance Addresses Implementation Requirements for Infrastructure Investment and Jobs Act for Drinking Water State Revolving Fund Emerging Contaminants Funding, but Clarification Is Needed Before More States Spend Funds

Report: EPA Guidance Addresses Implementation Requirements for Infrastructure Investment and Jobs Act for Drinking Water State Revolving Fund Emerging Contaminants Funding, but Clarification Is Needed Before More States Spend Funds

Report: The EPA Left $20 Million Unawarded in the Sewer Overflow and Stormwater Reuse Municipal Grants Program

Report: OIG Report to the Office of Management and Budget on the EPA’s and CSB’s Implementation of Recommendations Related to Purchase and Travel Card Programs

In compliance with the Act, the U.S. Environmental Protection Agency Office of Inspector General conducts periodic audits, assessments, and reviews of the travel and purchase card programs at the EPA and the U.S. Chemical Safety and Hazard Investigation Bo

Report: The CSB Has Improved Its Information Security Program but Needs to Document Recovery Testing Results, Consistent with National Institute of Standards and Technology Guidelines