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Visit our sites
Come to our treatment plant sites to see unique artwork, enjoy nature, and learn about water.
South Plant
Located in Renton, South Treatment Plant offers free programs and tours for all ages. South Plant is also home to CitySoil Farm, a 1.5-acre food demonstration farm using recycled resources, and Waterworks Gardens, an adjacent public park with walking trails.
CitySoil Farm at South Plant
CitySoil Farm is a 1.5-acre teaching and demonstration farm located at South Treatment Plant in Renton showcasing sustainable farming; accessible, local food; and a native tree nursery.
Waterworks Gardens at South Plant
Waterworks Gardens is a public park open year-round, dawn to dusk, located next to South Plant.
WaterWorks Gardens is a place where art, technology, and nature join in a unique way. Along with trails, public art, and native plants, the ponds of Waterworks Gardens filter and clean rainwater runoff or stormwater from the treatment plant. After passing through Waterworks Gardens, the treated stormwater flows into Springbrook Creek.
View our Waterworks Garden flickr album.
Parks and trails near South Plant
The City of Renton's Springbrook Nature Trail and the Black River Riparian Forest provide opportunities to explore nature in an urban environment.
Brightwater
The Brightwater Education and Community Center provides a community space to educate and motivate the public to protect our water resources. The site features 110 acres of public open space with 3 miles of walking trails, an event center with rentable rooms, and an environmental education center.
Brightwater trails
The Brightwater center and natural area were created as a promise to neighbors that the wastewater treatment plant would become a community amenity. Three miles of public trails connect the Brightwater center to art, restored riparian habitat, and stormwater treatment landscapes.
Enjoy art at Brightwater
Collection and Transformation, detail, Ellen Sollod
Artists participating in the Brightwater project created works of art that expose the working processes of the system and engage the public in inquiry and discovery.
West Point
West Point, located at Discovery Park in Seattle, treats wastewater from homes and businesses in Seattle, Shoreline, north Lake Washington, north King County, and parts of south Snohomish County. Seattle’s combined stormwater/wastewater sewer system also flows into West Point. There are currently limited education programs and tours of West Point due to ongoing, long-term capital improvement construction projects.
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 facility produces recycled water that is sent to the nearby Chinook Bend Natural Area for wetland enhancement.
Vashon Treatment Plant
The Vashon Treatment Plant, located on Vashon Island, cleans wastewater from homes and businesses within the Vashon Sewer District. The district contracted with King County in 1999 to take over operation of the Vashon Treatment Plant. King County constructed a new treatment plant (completed in 2006) next to the existing treatment plant.