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Notification: Inquiry into Source Water Contamination in St. Charles, Missouri

Project #OSRE-FY23-0042, January 30, 2023

The U.S. Environmental Protection Agency Office of Inspector General is initiating an inquiry into the potential contamination of the Elm Point Wellfield drinking water source in St. Charles, Missouri. As part of this inquiry, we will conduct interviews, gather data, and analyze a variety of issues, including adherence to regulations, policies, and procedures for responding to potential contamination. We may contact individuals associated with the EPA Region 7 Water Division, Superfund and Emergency Management Division, and Enforcement and Compliance Assurance Division, as well as individuals associated with the State of Missouri and the City of St. Charles.

  • Project Notification (pdf) (237.91 KB)

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The EPA's Office of Inspector General is a part of the EPA, although Congress provides our funding separate from the agency, to ensure our independence. We were created pursuant to the Inspector General Act of 1978, as amended.

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Environmental Protection Agency  |  Office of Inspector General
1200 Pennsylvania Avenue, N.W. (2410T)  |  Washington, DC 20460  |  202-566-2391
OIG Hotline: 1-888-546-8740.

Office of Inspector General

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Last updated on January 15, 2026
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