How To Use
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Use the icons on the left side of the map to zoom in or out.
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Click the Home icon to reset the zoom.
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If CSO Outfalls are Red or Orange the Public Advisory is Active.
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Click on the the the CSO Outfall location for discharge information.
Learn More About Combined Sewer Overflows
A combined sewer overflow (CSO) is the discharge from a combined sewer system that is caused by snowmelt or stormwater runoff. Combined Sewers are sewer systems that collect stormwater runoff, domestic sewage, and industrial wastewater in the same pipe and bring it to the wastewater treatment facility. They are designed to overflow during wet weather.