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  2. Office of Inspector General

OIG Reports

The EPA OIG conducts financial and performance audits to determine the efficiency and effectiveness of agency operations and programs. Audits identify potential fraud, waste and abuse; assess program compliance and management of agency processes; identify opportunities to improve human health and the environment; and offer recommendations for cost savings and other efficiencies.

The EPA OIG also conducts evaluations of EPA programs and activities that support clean air, clear water, safer chemicals, cleaner communities, and scientific research. The office assesses the design, implementation, and measurement of EPA programs, including evidence of program effectiveness and results.

Audits and evaluations differ from our investigations in that they do not deal with criminal activities and generally look at groups, processes, controls or structures, not individual employees. Also, when initiated, most audits are announced publicly, and upon their conclusion, a final report is posted here on the Reports page.

2010-2023 OIG Reports

  • Report: The EPA’s Residential Wood Heater Program Does Not Provide Reasonable Assurance that Heaters Are Properly Tested and Certified Before Reaching Consumers

  • Report: Controls Over EPA's Compass Financial System Need to Be Improved

  • Report: Close-Out of Hotline Complaint on Unreasonable Cost Increase to the Wastewater Treatment Facility Improvements, Perkins, Oklahoma

  • Report: Need Continues for a Strategic Plan to Protect Children’s Health

  • Report: Office of Research and Development Should Increase Awareness of Scientific Integrity Policies

  • Report: Review of Hotline Complaint 2010-282

  • Report: Chemical Safety and Hazard Investigation Board Did Not Take Effective Corrective Actions on Prior Audit Recommendations

  • Report: EPA Must Implement Controls to Ensure Proper Investigations Are Conducted at Brownfields Sites

  • Report: Audit of American Recovery and Reinvestment Act-Funded Cooperative Agreement 2S-96099601 Awarded to the Idaho Department of Environmental Quality

  • Report: Better Planning, Execution and Communication Could Have Reduced the Delays in Completing a Toxicity Assessment of the Libby, Montana, Superfund Site

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Office of Inspector General

  • EPA OIG Hotline
Contact the Office of Inspector General
Contact the Office of Inspector General to ask a question, provide feedback, or report a problem.
Last updated on October 7, 2025
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