Supreme Court says MMSD must fix leaks in city’s deep tunnel

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Deep Tunnel

MADISON (WITI) — The Wisconsin Supreme Court has ruled the Milwaukee Metropolitan Sewerage District will have to fix leaks in the city’s deep tunnel, according to

Bostco LLC sued MMSD, claiming that drained groundwater caused foundation problems in its downtown building.

The deep tunnel was opened in 1993.

It is designed to reduce the amount of sewage dumped into area waterways during heavy storms.

Right now, it’s not clear what the fix may be, or when it will happen.

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