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What is a combined sewer overflow?
A CSO (combined sewer overflow) is a discharge from a combined sewer system which is a mixture of domestic wastewater and excessive rainwater in the same pipe. A CSO may occur during heavy rainfall events when the amount of wastewater and rain exceed the capacity of the system.
Click here to learn more about CSO.
Click here to see MDEQ's annual CSO quality report.
Current & Past CSO Events
There have been no CSO events since 7/23/2018.