Basin H – Fall 2022 Update

Sewer Cleaning

The Milwaukee Metropolitan Sewerage District (MMSD) is cleaning up and safely disposing of contaminated sediment from sewers located west of the Milwaukee River along North Humboldt Boulevard between East Capitol Drive and East Locust Street known as “Basin H”.

Specifically, toxic polychlorinated biphenyls (PCB’s) that were flushed into sanitary sewers by a private company. PCB’s are toxic legacy chemicals that were banned in 1978 which require removal to keep our rivers and lake clean. This clean up will follow a USEPA approved remediation work plan.

Watch the October 2022 Basin H video update below to see how this work will impact you. Learn more about the Basin H cleanup by watching the watch the Waterway Restoration Partnership May 9, 2022 virtual meeting.

Access & Construction Traffic

-Milwaukee County Parks will continue to be open to the public.

-Limited traffic and trail impacts during the project including short term traffic restrictions in Humboldt Blvd. from Capitol Dr. south to Vienna Ave.

-MMSD is coordinating project with City of Milwaukee DPW.

-Visit MMSD.COM/BASINH to see the status of traffic and trail impacts.

What You Will See
-Temporary fenced work areas.
-Large trucks with sealed liquid containers.
-Workers in personal protective equipment.

Project Benefits
-Improved water quality
-A healthier community

Anticipated Timeline: Winter 2022 – Late 2023
-Reaches of sewer will be isolated for cleaning.
-Cleaning will move from north to south.

To see ongoing updates about this project status visit