The Milwaukee Metropolitan Sewerage District (MMSD) partnered with the United States Environmental Protection Agency (USEPA) to clean sewers located west of the Milwaukee River along Humboldt Avenue between Capitol Drive and Locust Avenue known as “Basin H”.
A 2008 investigation identified the Milwaukee Die Cast Company, located at 4132 North Holton Street in the City of Milwaukee, as the primary source of polychlorinated biphenyls (PCB’s), that were coating sewers in this area. PCB’s are legacy chemicals that were banned in 1978 which require removal to avoid problems in the future and keep our rivers and lake clean. The USEPA removed the PCB’s at the business site. MMSD removed and safely disposed of the PCB contamination that remained in the sewers in 2022-2023.
Partner Lead: Milwaukee Metropolitan Sewerage District
Status: Monitoring
Outcome: Cleaned-up Waterways
More Information: Pre-Cleanup October 2022 Update Video.