Join our Dec. 16 Board of Trustees meeting
12/15/2025Join us on Tuesday, Dec. 16, 2025 at 5 p.m. for our Board...
We were organized in 1921 under the State of Illinois’ Sanitary District Act of 1917. Today we provide sewer service and wastewater treatment to more than 60,000 people, which includes 20,000 residential, commercial, industrial, and institutional customers. We operate and maintain a sewer system with over 250 miles of sewer main, and a Wastewater Treatment Center with a design average capacity of 11 million gallons per day.
What We Do
We were organized in 1921 under the State of Illinois’ Sanitary District Act of 1917. Today we provide sewer service and wastewater treatment to more than 60,000 people, which includes 20,000 residential, commercial, industrial, and institutional customers. We operate and maintain a sewer system with over 250 miles of sewer main, and a Wastewater Treatment Center with a design average capacity of 11 million gallons per day.
What We Do
We were organized in 1921 under the State of Illinois’ Sanitary District Act of 1917. Today we provide sewer service and wastewater treatment to more than 60,000 people, which includes 20,000 residential, commercial, industrial, and institutional customers. We operate and maintain a sewer system with over 250 miles of sewer main, and a Wastewater Treatment Center with a design average capacity of 11 million gallons per day.
What We Do
As a unit of local government, we are committed to serving the community by protecting public health and the environment. Learn more about the people and policies that make this possible.
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When you wash your hands, flush the toilet, wash dishes, and run the laundry, all of the dirty water ends up at our Wastewater Treatment Center. It’s our job to clean that water and return it to the environment.
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We not only clean the dirty water you send us, but we put the solids to good use too! The District processes the organic material into something called Biosolids, a free and natural fertilizer available to you.
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Does it matter what you flush? Have you ever wondered what a Wastewater Treatment Center looks like? How exactly does a sewer work? Discover more below.
Educational OpportunitiesHow To Maintain Your Sewer LineExternal Resources
2710 Curtiss Street
Downers Grove, Illinois 60515
Phone: (630) 969-0664
Fax: (630) 969-0827
Monday-Friday: 8 a.m. - 4:30 p.m.
Saturday and Sunday: Closed
