Site Plain EPA Superfund sites near you, in plain language

EPA Superfund Site

SHEBOYGAN HARBOR & RIVER

WI | EPA ID WID980996367

Human exposure is NOT currently under control

About this site’s exposure pathways: As of September 2025, the Sheboygan Harbor & River Superfund site is considered "Current Human Exposure Not Under Control" due to human ingestion of contaminated fish. Fish contaminants are polychlorinated biphenyls (PCBs) and certain heavy metals. A fish consumption advisory is in place, with signs posted to warn against fish consumption, but fishing has been observed, and fish are likely consumed. Approximately 83,000 cubic yards of PCB-contaminated sediments were dredged from the River and Harbor, completed in December 2012. Monitored natural recovery is the selected remedy for the Middle River. It will take time for sediments to reach the selected long-term cleanup level and for fish tissue concentrations to decrease. Fish are sampled annually to monitor levels of PCBs. Additional PCB contamination has been found in soils at the former Tecumseh facility; an investigation is planned for 2024 to determine the extent of contamination, and to evaluate response actions.

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Data limitations: Proximity to a Superfund site boundary does not mean your property is contaminated. EPA site boundaries show the area designated for cleanup, not the full extent of contamination. Groundwater plumes can extend beyond site boundaries. This tool shows publicly available EPA federal data. It is not affiliated with or endorsed by EPA, and is not a substitute for a professional environmental assessment.

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