Carnation Treatment Plant
The Carnation Treatment Plant, located in the City of Carnation, serves about 2,000 people in Carnation’s urban growth area, with capacity to serve up to 4,000 in 2030.
The plant is part of King County's regional system. At design capacity, the plant is expected to treat 480,000 gallons of wastewater a day. The collection system, owned and maintained by the City of Carnation , delivers sewage to the plant from residential and commercial customers.
In addition to the reclaimed water, the plant has been designed with numerous “green” features that minimize impacts on the environment, conserve resources and maximize energy efficiency.
View more photos on our Flickr site .
Contact us
24 hour emergency and odor reporting: 206-263-1760
Administration: 206-263-1760
Address
4405 Larson Ave.
Carnation, WA 98041
Related content
Public treatment plant tours (available but limited)
Education resources for schools and community groups