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Wastewater Treatment

King County, Washington

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: 206-477-5371
Fax: 206-684-1741
Telecommunication device for the deaf (TTY): 711

Get Directions to our office location in Seattle, Washington.

Staff Contacts

Only 1 percent of water on earth is fresh and available

Use commercial car washes or the grass.


Use commercial car washes or wash on the grass

Commercial car washes clean and recycle the water they use. If you don't use a car wash, washing your car on the grass keeps soap and dirt from entering the storm drain and the Puget Sound.

Did you know? If you don't have an environmentally friendly car wash product you can use a biodegradable soap or make your own cleaner.

Helpful hint: Want to reduce pollution and save water at the same time? Try washing vehicles with a waterless citrus based cleaner to increase the time between full washes.

Find out how you can help save water!
Use less water


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