Holiday closure Monday May 28: Most county offices will be closed in observance of Memorial Day.

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

King Street Center
201 S. Jackson St., Suite 500
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

2012 WTD Ratepayer Report cover
The Ratepayer Report was developed to inform you about our services, and to make you aware of a proposed rate increase of $3.75 to take effect on Jan. 1, 2013. View news release.

Loop -- turn your dirt around
Turn your dirt around. Learn more about Loop.

Project phases and how King County works with the public -- learn more
Construction to begin soon
What happens during a King County project? How is the public involved? Learn more.

Don't Flush Trouble flier -- also available in Spanish, Russian, Chinese, Vietnamese and Somali
Put used cleaning wipes, cloths and pads in the trash, NOT the toilet!
 This flier is available in several languages to print out and post in your bathroom or kitchen to remind yourself what needs to be thrown away!

Reporting and viewing problems

Doing business with WTD

Learning about projects (under construction or in planning)

Its easy BeingGreen, Let King County show you how. Learn how to reduce your carbon footprint.

Getting involved in protecting the environment--citizen action