Wastewater Division

Public Notice - Sewer Construction Information

Construction of the South Side Park Combined Sewer Overflow (CSO) Lift Station and Relief Sewers is being financed by the Clean Water State Revolving Fund (SRF). Review the additional details regarding this project and its funding.

The sewage treatment plant located at 450 Environmental Drive, operates 24 hours per day, and is permitted to treat 8 million gallons of wastewater each day with a maximum excess flow capacity of 16 million gallons per day. See (NPDES Permit IL0021873).
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Currently the average daily flow through the treatment system is 5 to 6 million gallons per day. The plant is fed by nearly 300 miles of sewage collection lines. The entire collection system has 50 sewage lift stations that pump sewage from low-lying areas to the plant via sewer collection lines. 

Recent Improvements
  • Upgrades and replacement of all pumps, valves, and electrical controls for three large process pumping stations. A total of thirteen pumps averaging 20 hp to 35 hp were installed to replace 1940-1970 vintage equipment.
  • Complete overhaul of Grit Collection System. 
  • Complete overhaul of Bar Screens. 
  • Replacement of plant’s boiler with modern HVAC system.