Winthrop Ground Water Contamination is a superfund site located at Highway 19 West, Winthrop, MN 55396. The Environmental Protection Agency (EPA) identifies sites such as Winthrop Ground Water Contamination because they pose or had once posed a potential risk to human health and/or the environment due to contamination by one or more hazardous wastes. Winthrop Ground Water Contamination is currently registered as an Archived superfund site by the EPA and does not require any clean up action or further investigation at this time.