Sanitary District of Decatur, IL

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Decatur, IL
Sanitary District of Decatur, IL

The regional wastewater treatment authority for central Macon County.

05/25/2026

Summer is here, and that means more time outside! From boating on the lake, watering the lawn, to just hanging out and enjoying the sunshine, SDD is here to help you make the most of your summer. ☀️

05/14/2026

Ever wonder what it takes to keep our community running smoothly? From the pipes beneath our streets to the treatment processes behind the scenes, the Sanitary District of Decatur manages a system designed to protect public health and keep our waterways clean. Here’s a look at the facilities that make it all happen.

05/11/2026

For assistance with sewer problems or odors, the Sanitary District of Decatur's 24/7 hotline is just a call away. Whether it’s a backup, odor complaint, or other urgent concerns, call 1-447-CALL-SDD anytime. We’re always ready to help.

05/08/2026

This photo shows SDD’s major expansion completed in 1993 after seven years of construction. The $23 million upgrade added 30 clarifier tanks across 90 acres, expanding capacity, improving efficiency, and supporting Decatur’s growth. It was a major step in modernizing the system to meet future needs.

05/06/2026

Some of the smallest creatures in the Sangamon River can tell us a lot about water quality! Macroinvertebrates, like mayflies and caddisflies, live in the water year-round and respond quickly to changes in their environment. Because they can’t easily move away, they’re a great way to understand how a river is doing over time.

That’s why monitoring and protecting water quality matters. At the Sanitary District of Decatur, our work helps support cleaner water and healthier habitats for these species, and for our community that depends on them.

04/22/2026

Earth day is a great reminder that protecting our environment starts with small, simple actions. 🌎 At SDD, caring for our waterways and treating wastewater responsibly is part of our commitment to keeping our community and environment healthy. Want to do your part? Swipe for a few simple tips that can help protect our water and keep things flowing smoothly.➡️

04/20/2026

Join us at the 45th Annual Festival of Spring! SDD will be at Rock Springs Conservation Area on Saturday, April 25 from 12–4 p.m. for this fun community event celebrating Earth Day and the arrival of spring. We’ll be there alongside other local organizations sharing information and resources focused on water, wildlife, and protecting our environment. Learn more here: https://bit.ly/4cfgsYq

04/17/2026

This month, we’re highlighting our Instrumentation & Controls team and the important work they do behind the scenes every day. They help monitor and maintain the systems that keep our treatment processes running safely and efficiently, making sure equipment is working properly and data is accurate. Their work plays a key role in supporting reliable service and meeting environmental standards for our community.

As technology and regulations continue to evolve, this team stays focused on training and continuous improvement to help SDD move forward.

04/15/2026

Ever wonder how much water flows through your home each day, and what happens to it after it leaves? The average household uses hundreds of gallons daily. That water travels to the Sanitary District of Decatur, where we treat it through a multi-step process to remove contaminants and meet environmental standards before safely returning it to local rivers and streams.

04/10/2026

Every drop of wastewater from homes and businesses in Decatur comes to the Sanitary District of Decatur for treatment. We use a multi-step process to remove contaminants and ensure the water meets state and federal environmental standards before returning it to local waterways. This work helps protect our community’s health and the quality of our rivers and streams.

04/07/2026

Need to report sanitation issues in Decatur or Macon County? The Sanitary District of Decatur has you covered with our hotline: 1-447-CALL-SDD! Whether it's sewage overflows or missing manhole covers, help keep our community clean and healthy by dialing in today.

Address

Decatur, IL
62522

Website

https://sddcleanwater.org/

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