DEQ - Sanitary and Combined Sewer Overflow

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Michigan Department of Environmental Quality

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Sanitary and Combined Sewer Overflow

Combined/Sanitary Sewer Overflow Information Combined sewer and sanitary sewer overflows are described as discharges from a sewer system which contains untreated or partially-treated sewage. Please click 'more' below to learn more about CSO and SSO discharges and what can make them occur.

This page can be accessed as www.mi.gov/sewagedischarge.

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Information

• 2011 Annual CSO/SSO Report PDF icon