By reducing combined sewer overflows into local water bodies, King County is protecting public health and the environment.

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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

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Real Time CSO Notification

King County Combined Sewer Overflow (CSO) locations

King County CSO locations

King County Combined Sewer Overflow (CSO) Locations. Updated March 2013. Available as PDF (1.4MB).

Related information

View real-time status of King County and City of Seattle CSO locations

Updated: March 29, 2013

FAQs
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