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Macomb County

Retention Basin/Combined Sewer/Sanitary Sewer Overflow


Combined Sewer Overflows (CSOs): Discharge of a mixture of storm water and domestic waste when the flow capacity of a sewer system is exceeded during rainstorms.  

Sanitary Sewer Overflows (SSOs): are discharges of raw sewage from municipal sanitary sewer systems. SSOs can release untreated sewage into basements or out of manholes and onto city streets, playgrounds and into streams before it can reach a treatment facility. SSOs are often caused by blockages in sewer lines and breaks in the sewer lines.


Current Overflow Data for 2020

The following historical overflow data is available for reference.  Please click on the desired year.

2019, 20182017, 2016, 20152014, 2013,  2012, 20112010, 2009,  20082007200620052004200320022001200019991998199719961995


If you have any questions, call us at 586-469-5236, Monday-Friday, 8:30 a.m. - 5:00 p.m. or E-mail us now.

Other Resources

Michigan Department of Environmental Quality

Environmental Protection Agency