Combined Sewer Overflow (CSO) Information

A CSO is the release of untreated waste and storm water from a combined sewer system directly into a waterway.  The release of untreated water occurs a a CSO structure.  The Village’s combined sewer system contains  2 overflow structures located along the North Shore Channel.   The Village has a program in place to minimize CSOs, which can be viewed by clicking here. The link provides information on the CSO Operational and Maintenance Plan, Pollution Prevention Plan, and Public Notification Plan.

For more information on combined sewer overflows, please visit the Metropolitan Water Reclamation District of Greater Chicago’s (MWRD) website. The MWRD offers a CSO notification system on their website to alert residents when a CSO has occurred.