Treatment Plant Tours

More than 2,100 people a year tour one of King County's two regional wastewater treatment plants in Renton and Seattle. Visitors see how wastewater is treated and reclaimed, biosolids are created, and energy is recovered. Tours are available for schools and community, civic, environmental and professional groups as well as international visitors. More tour information.

Here's what you can expect on a typical tour (photos are taken at the South Treatment Plant):

A short presentation about water quality and wastewater treatment is given by the tour guides.

Tour guides lead groups through each of the plant processes, beginning with preliminary treatment.

Groups are able to witness wastewater treatment in action and explore many areas of the treatment plant.

Explanations and observations about each process (primary treatment, top image, and sludge thickening, bottom image) are made to groups.

Interested in learning more about the wastewater treatment process . . .

How is wastewater treated at King County's Treatment Plants?

at West Point Treatment Plant?
at South Treatment Plant?

A Dimmitt Middle School student explores tunnels at South Treatment Plant

Back to main plant tour page.

For questions about the Wastewater Treatment Division Web site, please send an e-mail message or contact us at:

Department of Natural Resources and Parks
Wastewater Treatment Division
201 S. Jackson St., Suite 505
Seattle, WA 98104-3855
Phone: 206-684-1280
Fax: 206-684-1741
Telecommunication device for the deaf (TTY): 711

Updated: Aug. 23, 2006

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