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2025 Awareness Survey
We want to hear from you. Since 2022, the Sanitary District of Decatur has been working to better connect with the communities we serve, including Decatur, Forsyth, Mt. Zion, Argenta, Oreana, and greater Macon County and your input can help us do more. This short 5–10 minute survey will let us know if our branding […]

Pay Now or Pay a Lot More Later: The Importance of Sewer Maintenance
Pay Now or Pay a Lot More Later: The Importance of Sewer Maintenance By: SDD Engineering Staff A classic oil filter commercial highlighted the significance of routine maintenance, particularly the necessity of keeping engine oil and filters clean. That commercial’s iconic tagline was, “You can pay a little now, or pay a LOT later.” The […]
2025 Winning Chemical Bids
Attached please find a copy of the approved Winning Chemical Bids List & Tabulations for 2025. If you have any questions please contact Ashley Bailey, Director of Compliance & Innovation via email at ashleyb@sddcleanwater.org or phone: (217) 422-6931 ext. 214. 2025 Final Winning Chemical Bids Table and Tabulation Report – 042325.

Safety: More Than Just a Practice, It’s a Culture at SDD
Safety: More than just a practice, it’s a culture at SDD By Kent Newton On Friday, July 29, 1983, a pipe at the bottom of a 20-foot-deep dewatering pit needed to be opened. The procedure was routine but not without risk. A sanitary district employee needed to climb down a ladder, maneuver over some […]
The Sanitary District of Decatur was formed in 1917 and is the regional wastewater treatment authority for central Macon County Illinois providing wastewater treatment services to the residents and industrial and commercial users in the Decatur metropolitan area including Argenta, Decatur, Forsyth, Mt. Zion and Oreana.