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
Telecommunication device for the deaf (TTY): 711
Get Directions to our office location in Seattle, Washington.
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.
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
Keep water clean
Properly dispose of medicine
Hazardous waste disposal
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