Combined Sewer Overflow

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CSO - Combined Sewer OverflowThe City of Joliet has created a public notification plan to ensure that the public receives adequate notification in the event of an overflow. This program was developed in compliance with the requirements of the City’s National Pollutant Discharge Elimination System (NPDES) Combined Sewer Overflow (CSO) General Permit No. IL0022519. The overflow points are located throughout the City. For a map of these overflow points, click here [PDF].

CSO Overflow Caution sign [PDF]

Current CSO Alert

Public Information Meeting concerning the City of Joliet's Long-Term Control Plan for the operation of a combined sewer system

The City of Joliet, Department of Public Utilities, will hold a Public Information Meeting soon. Check back here for details. 

Long Term Control Plan (LTCP)

The City of Joliet owns and operates a publicly owned treatment works (POTW) consisting of separate sanitary sewers, combined (stormwater and sanitary) sewers, a 36-inch siphon river crossing, and three wastewater treatment plants (WWTPs). The East Side WWTP serves a 14-square-mile service area on both sides of the Des Plaines River. This plant has the oldest collection system and is the focus of this LTCP.

View the Long Term Control Plan (LTCP)

View the Operation & Maintenance Plan (O&M)

View the Pollution Prevention Plan (PPP)


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