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For questions about the Wastewater Treatment Division Web site, please send an e-mail message or contact us at:

King Street Center
201 S. Jackson St., Suite 505
Seattle, WA 98104-3855
Phone: 206-684-1280
Fax: 206-684-1741
Telecommunication device for the deaf (TTY): 711

Get Directions to our office location in Seattle, Washington.

Staff Contacts

Puget Sound shoreline next to the West Point Treatment Plant, Seattle

Wastewater Treatment Division

King County, Washington, protects water quality and prevents water pollution by providing wastewater treatment to 17 cities and 17 local sewer utilities. The county's Wastewater Treatment Division serves about 1.5 million people, including most urban areas of King County and parts of south Snohomish County and northeast Pierce County. More about our system and facilities.

Spotlight

Would you like to know about King County's garden and greenhouse at South Plant?
King County's garden and greenhouse at South Plant uses Class A reclaimed water and high quality biosolids compost. Learn more about research conducted in 2008 and 2009, and plans for 2010.

The county's wholesale monthly sewer rate will remain at $31.90 for 2009-2010. Effective Jan. 1, 2010, the monthly capacity charge for new connections will increase from $47.64 to $49.07. View June 16, 2009 news release.

floodicon_crop Flood preparation in the Green River Valley, including wastewater frequently asked questions (FAQs).

Most visited pages

Reporting and viewing problems

Doing business with WTD

Learning about projects (under construction or in planning)

Getting involved in protecting the environment--citizen action

Related agencies

Regional committees

Regional wastewater treatment plants

News

Jan. 27, 2010 -- King County puts corrective measures in place at West Point Treatment Plant following Dec. overflow

Jan. 22, 2010 -- Carbon sequestration project needs help with tree planting, Jan. 30 at Island Center Forest

Jan. 20, 2010 -- Tide surge wallops West Seattle pump stations; No damage to facilities, system again operating normally

Jan. 12, 2010 -- Fast action stops Kirkland Pump Station overflow

Dec. 29, 2009 -- Engineers keep an eye on Brightwater tunnel alignment in Bothell

Dec. 18, 2009 -- Water quality quickly improves, beach reopened at West Point

Dec. 15, 2009 -- West Point Treatment Plant overflow under investigation

Dec. 11, 2009 -- Brightwater outfall earns prestigious ‘Best of the Best’ engineering award

More WTD News Releases | DNRP News Releases

Resources