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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

Choose natural, simple products. Avoid fragrances, phosphorus and chemicals.

Choose natural, simple products. Avoid fragrances, phosphorus and chemicals

Wastewater treatment plants use natural processes to clean water--these processes cannot break down all chemicals.

Make your own cheap and effective cleaning products or choose products with the most natural and simple ingredients.

Green Cleaning Recipes

Did you know? You can use vinegar, baking soda, olive oil, borax, and liquid castile soap to make your own cleaning supplies.

Helpful hint: Take unused chemicals to your nearest hazardous waste facility to properly dispose of them

Find out how you can help keep water clean!
Keep water clean


Return medicines to a pharmacy or put in a trash can.
Properly dispose of medicine

Take hazardous waste to a disposal facility.
Hazardous waste disposal

External resources

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