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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

Publications and resources

The following is a list of Wastewater Treatment Division publication libraries, annual reports, brochures, and archival/historical documents. You will need a PDF reader to view .PDF files linked from this page.



Environmental programs



Key facts

Annual and financial reports




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King County resources

External resources

The National Association of Clean Water Agencies (formerly the Association of Metropolitan Sewerage Agencies) -- NACWA represents wastewater treatment agencies in developing environmental legislation and working with federal regulatory agencies to carry out environmental programs.

National Small Flows Clearing House -- The NSFC helps America's small communities and individuals solve their wastewater problems to protect public health and the environment.

Puget Sound Partnership -- The Puget Sound Partnership is a community effort of citizens, governments, tribes, scientists and businesses working together to restore and protect Puget Sound.

United States Environmental Protection Agency -- EPA's mission is to protect human health and safeguard the natural environment -- air, water, and land -- upon which life depends.

Water Environment Federation -- WEF is an international not-for-profit educational and technical organization of more than 40,000 water quality experts. Its mission: to preserve and enhance the global water environment.