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When too much rain gets into the sanitary sewer system, our highest priorities are preventing sewage from backing up into your basement and protecting the environment.
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Milwaukee Weather Hourly Forecast
Visit the MMSD Rain Gauge locations and Export the Rain Gauge Data.
View the Milwaukee Weather Hourly Forecast and follow the live Radar for the most recent weather updates in Milwaukee, WI.
View Radar
It's simple, use less water during a storm/heavy rain.
Hold off on washing dishes
Do laundry the next day
Take a shorter shower
Empty your rain barrel
Receive Water Drop Alert text messages Text WATERDROP (para GOTADEAQUA española) to 414-296-4422
Water Drop Alert Info
When heavy rain threatens the Milwaukee area, stormwater increases the water sent to the Milwaukee Metropolitan Sewerage District (MMSD) water reclamation facilities.
MMSD has captured and cleaned 98.6% of all the stormwater and wastewater entering the regional sewer system since 1994. Before the Deep Tunnels, our region polluted our waterways with 50-60 sewer overflows yearly, and now we average two.
The MMSD Deep Tunnels have prevented more than 160.2 billion gallons of pollution from getting into Lake Michigan. Thanks to the deep tunnels and many other improvements, MMSD has captured and cleaned 98.6% of all the water and wastewater that's entered the regional sewer system since 1994.
CURRENT STORAGE 12 million gallons
MAX CAPACITY 432 million gallons
As of 2/21/25, 12:55 PM
CURRENT STORAGE 0 million gallons
MAX CAPACITY 89 million gallons
MMSD runs two water reclamation facilities, Jones Island and South Shore, that clean residential and industrial wastewater for 29 communities with approximately 1.1 million people in the Milwaukee area.
CURRENTLY TREATING 49 million gallons / day
MAX CAPACITY 300 million gallons / day
CURRENTLY TREATING 68 million gallons / day
MAX CAPACITY 330 million gallons / day
MMSD is committed to protecting our community and the environment for a healthier, cleaner, and more resilient region. MMSD has captured and cleaned 98.6% of all the water that's entered the regional sewer system since 1994. Learn how MMSD's water reclamation facilities clean our water.
Environmental Protection Agency (EPA) 85% Water cleaned & captured MMSD's status since 1994 98.6% Water cleaned & captured
This page is automatically updated. The data have not been verified and may contain errors. As data are verified, MMSD reserves the right to make corrections to values as necessary. MMSD is providing this data as is and the user assumes the entire risk of use of this data.
Report a Wet Basement and learn more about what could be causing the Water in Your Basement.
Report a Basement Wet Basement Tips
Protect Your Home
Proper Grading
Foundation Drains
Laterals
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