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

How to report sewer odor complaints

Odor control hotline by west and east service areas.
Odor control hotline by west and east service areas. Click map for larger version.

 Brightwater Treatment Plant service area
Brightwater Treatment Plant service area
 (PDF)

King County is committed to odor control. However, we cannot guarantee that there will be no odors in our existing system. Occasionally, equipment will need to be shut down for clean up, preventive maintenance or repairs.

Please call the odor hotline if you experience odors, and we will do everything we can to restore our high level of odor control.

  • Try to locate the source of the odor.
  • Report the odor as soon as possible. Give the location of the odor and the time it occurred. That information will ensure the agency responding can
    locate the odor and take corrective measures to eliminate it.
  • For odors occurring in homes, businesses and local storm drains, call your local sewer agency. The phone number to your local agency can be found in your sewer bill.
  • For odors that can't be specifically located, call the closest treatment plant's Odor Control Hotline for assistance.

How to contact us

West Point Treatment Plant
24-hour Odor Control Hotline:
206-263-3840

South Treatment Plant
24-hour Odor Control Hotline:
206-684-2404

Brightwater Treatment Plant 
24-hour Odor Control Hotline:
206-263-9500

Other agency contacts

  • Puget Sound Clean Air Agency: 206-343-8800
  • To identify and contact your local sewer agency, check your sewer bill.