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The Vashon plant is a secondary treatment facility that uses an oxidation ditch process.

Vashon labVashon lab

View more photos on our Flickr site  .

Contact us

24 hour emergency and odor reporting:   206-263-1760
Administration:  206-463-7318 

Address
9615 S.W. 171st St.
Vashon, WA 98070

Directions and map