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EPA Superfund Site

LONG PRAIRIE GROUND WATER CONTAMINATION

MN | EPA ID MND980904072

Exposure status: insufficient data

About this site’s exposure pathways: As of August 2025, there is not sufficient information available to determine the site-wide Human Exposure Control status at the Long Prairie Groundwater Contamination Superfund Site. Groundwater, soil, and soil vapor are contaminated by trichloroethene, dichloroethene, and vinyl chloride. The potential human exposure pathways include ingestion of groundwater or soil, and inhalation via the vapor intrusion pathway. In 1983 a Groundwater Health Advisory Area was established by the State and requires all residents and businesses in the Advisory Area be connected to the municipal water supply. To determine the Human Exposure Under Control status, further information will be obtained by completing assessments for the vapor intrusion pathway. The vapor intrusion assessments are expected to be completed by August of 2027 at which time there should be sufficient information to determine the Human Exposure Under Control status for the site.

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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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