Water & Sewer Utilities

NOTIFY ME of any Water/Sewer Utility news (emergency and non-emergency).

Go to NOTIFY ME. After entering your email address, please select, NEWS FLASH/WATER UTILITY.


About the Water & Sewer Utility


The City of Middleton Water and Sewer Utility is responsible for maintaining approximately 160 miles of water and sewer mains. We have eight water pumping stations with a combined pumping capacity of over eight million gallons per day and nine sewer pumping stations that pump to the Madison Metropolitan Sewerage District. Middleton serves about 6,000 metered customers with an average daily use of 2.3 million gallons per day. We also maintain over 900 hydrants and 1,500 valves.

The Water Utility has two water towers with a combined capacity of 1,250,000 gallons and two ground reservoirs that hold 1,100,000 gallons. Middleton draws its water from six sandstone wells, ranging in depth from 330 feet to 856 feet. These wells penetrate the Franconia, Galesville, Eau Claire, and Mount Simon formations. The Water and Sewer Utility are a self-supporting enterprise with 100% of the expenses paid by the utility customers through quarterly bills.

Public Notices:
Middleton Water Utility Customers

Fall System Flushing
The City of Middleton Water Utility will be flushing water mains and hydrants during the weeks of September 12-16 and 19-23, between the hours of 7:00 pm – 5:00 am. 

During the flushing process, water in the mains may become discolored for a short period of time. The discoloration is due to mineral deposits being dislodged during the flushing process. The discolored water does not cause any adverse health effects; however, it may taste different due to the increased minerals. If you notice that your water is discolored, run the cold water tap nearest to your water meter for a short period of time until the water runs clear.  

Sign up for notifications through the “Notify Me” option for updates on areas scheduled to be flushed at cityofmiddleton.us. 

Your patience and understanding are appreciated during this critical main cleaning process.  Thank you for your cooperation. 

Stagnant Building Water

Middleton Water Utility and Public Health Madison & Dane County are warning people about the danger of stagnant water in buildings that have been closed during the Coronavirus (COVID-19) pandemic. Water in plumbing that has been sitting stagnant for weeks could be a breeding ground for bacteria and potential pathogens like Legionella.

Buildings across the city and state have been at reduced capacity or closed as people stay home to limit the spread of the virus. Now, some businesses are starting to re-open under the Governor’s new Safer at Home Order guidelines. But it’s crucial that people pay attention to their plumbing and make sure the water is safe.

Public Health has put together a guide PDF  to help businesses and other buildings re-open safely. Stagnant water will have to be flushed from both the hot and cold water systems in a building to get fresh, chlorinated water in.

"Toilets Are Not Trashcans"