skip to main content

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

Collect rain water to irrigate during summer.


Use a rain catchment system to collect water for later use

Collecting rain water reduces the amount of water that gets polluted and runs into the Puget Sound. It is also a free source of water to use for non-drinking uses around your yard and house.

Did you know? The Puget Sound region experiences natural summer droughts where only 20% of the annual rainfall occurs from May to September. By reducing your demand from established water supplies during the dry summer months you are helping the environment and salmon

Helpful hint: You can buy or make a rain barrel. If you have a lot of plants to care for, consider linking several together to increase your storage capacity.


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

Compost: healthy soil retains more water.
Use compost

Rain catchment systems: support low impact development.
Sustainable infrastructure

Install drip irrigation to directly water plant roots.
Install drip irrigation