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For questions about the King County CSO Control Program, please contact Karen Huber.

Wastewater Treatment Division
King Street Center
201 S. Jackson St., Suite 505
Seattle, WA 98104-3855

Get Directions to our office location in Seattle, Washington.

Real Time CSO Notification

King County Combined Sewer Overflow (CSO) locations

CSO map

Map is also available as a pdf file (610KB).

Related information

View real-time status of King County CSO locations (32 of 38 locations).