About Us
2035 Vision
Strategic Plan & Performance
Research
History
Milorganite
GIS Maps and Data
News
Events
Facilities
Budget/Financial
Blue Notes Newsletter
Blue Notes Newsletter Sign-up
What We Do
Education and Outreach
Milwaukee Estuary AOC Projects
Sustainability
What You Can Do
Green infrastructure
Rain Barrels
Rain Garden
Porous Pavement
Native Landscaping
Adopt-A-River
Become a Fresh Coast Guardian
Home HazMat Collection
Medicine Collections
Water Drop Alert
What Not to Flush
Procurement
Procurement Opportunities
Construction and CAD Standard Documents and Special Bid Attachments
Vendor Registration
Events & Outreach
Supplier Diversity
Business Development
Workforce Development
Contract Compliance Login
Government & Business
Municipal Information
Rules & Regulations
Private Property I & I
Pipe Check Contractor Resources
Industrial Waste & Pretreatment
Total Maximum Daily Loads (TMDL)
2050 Facilities Plan
2020 Water Quality Initiative
When heavy rain threatens the Milwaukee area, stormwater increases the water sent to the Milwaukee Metropolitan Sewerage District (MMSD) water reclamation facilities.
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.
Facility Capacity Information
Want to see how much rain we've had in the last two or three weeks?
Get helpful text alerts during heavy rainfalls to use less water to help reduce sewer overflows in your area.
Receive Water Drop Alert text messages when heavy rain threatens the area. When a Water Drop Alert has been issued, a reminder is sent to use less water.
What do you do when an alert is issued?
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 151.4 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 98 million gallons
MAX CAPACITY 432 million gallons
As of 11/21/24, 12:30 AM
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 70 million gallons / day
MAX CAPACITY 300 million gallons / day
CURRENTLY TREATING 204 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.
Please call your municipal public works department to report water in your basement, and fill out our Reporting a Wet Basement form. A copy of the form will be shared with your municipality.
To learn more about what could be causing the water, visit our Water in My Basement page.
Managing water on your property can significantly reduce your chances of having a wet basement.
Learn about your basement's laterals, foundation drains, and other issues that could be causing your basement to flood.
By using our website you are consenting to our use of cookies in accordance with our cookie policy.
