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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

Regional Wastewater Services Plan RWSP cover

King County's Regional Wastewater Services Plan (RWSP) outlines future sewer infrastructure for King County during the next 30 years. Elements include CSO control projects, a third regional treatment plant, biosolids management, water reuse, and inflow and infiltration reduction. Visit the RWSP Web site for more information