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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

Rain catchment systems: support low impact development.

Support sustainable infrastructure, rain catchment systems, and low impact development

Bioswales, pervious or semi-pervious pavements, green roofs, rain gardens, cisterns, rain barrels and even trees are all examples of sustainable infrastructure which help reduce stormwater runoff into waterways and sewer systems.

Did you know? In King County you may be eligible to receive compensation for installing a raingarden to your private property.

Helpful hint: if you live in an apartment building or condo support raingardens in public places.

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

Collect rain water to irrigate during summer.
Collect water
to irrigate

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External resources

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Its easy being green, let King County show you how