248 plants indexed.
ASOTIN MUNICIPAL STP serves Vineland, Washington, treating wastewater for 1,255 people with secondary treatment. The plant discharges 355.83 million gallons per year into the local watershed.
North Bay WWTP in Belfair, Washington, serves a population of 4,175. The plant operates under the U.S. Clean Water Act, with a designed capacity of 1.00 million gallons per day.
Hawks Prairie Recl Water Satellite in Lacey, Washington serves approximately 18,779 people. The plant operates under the US Clean Water Act framework, with a designed capacity of 1.00 million gallons per day.
Tenino Wastewater Facility serves approximately 1,700 residents in Tenino, Washington. The plant has a designed capacity of 1.00 million gallons per day and operates under U.S. Clean Water Act regulations.
Airway Heights WWTP serves 6,220 people in Washington, USA. The plant discharges treated wastewater into local waterways under EPA NPDES regulations.
Port of Sunnyside Industrial WWTF is a small industrial wastewater treatment facility in Sunnyside, Washington, serving a population equivalent of 17. It operates under U.S. EPA and Washington state regulations.
Birch Bay STP serves 5,500 people in Cottonwood Beach, Washington. The plant operates under the US Clean Water Act NPDES permitting program for municipal wastewater treatment.
Liberty Lake STP serves 9,255 residents in Liberty Lake, Washington, as part of the municipal wastewater infrastructure. The plant operates under the U.S. Clean Water Act, with NPDES permits regulating its discharge to protect local water quality.
Yelm Wastewater Treat and Reclaim serves approximately 7,000 residents in North Yelm, Washington. The plant operates under U.S. Clean Water Act regulations with a designed capacity of 1.00 million gallons per day.
Winthrop S_T Facility serves Oroville, Washington, treating wastewater for approximately 510 residents. The plant operates under U.S. Clean Water Act regulations for small communities.
Winslow Treatment serves Bainbridge Island, Washington, with a designed capacity of 1.00 million gallons per day. The plant treats wastewater from a population of 2,385 and discharges into the Puget Sound ecosystem.
Sunnyside POTW is a municipal wastewater treatment plant serving approximately 16,010 people in Sunnyside, Washington. It operates under the U.S. Clean Water Act framework.
Selah S_T Facility is a wastewater treatment plant in Selah, Washington, serving a population of approximately 5,100. It operates under the US Clean Water Act and EPA NPDES permitting framework.
Raymond STP is a municipal wastewater treatment plant in Pacific County, Washington, serving a population of 3,664. The facility has a designed capacity of 1.00 million gallons per day.
Prosser WWTP serves approximately 5,780 people in Benton County, Washington. The plant discharges treated wastewater into the regional watershed, supporting local water quality and downstream ecosystems.
PE ELL S_T FACILITY is a wastewater treatment plant in Centralia, Washington, serving approximately 635 people. It operates under the US Clean Water Act framework.
Okanogan S_T FAC is a wastewater treatment plant serving approximately 2,585 people in Okanogan, Washington, USA. The facility discharges into the local watershed within the Columbia River basin.
Ocean Shores STP serves about 10,600 residents in Washington State. The plant discharges treated wastewater near the Pacific coast, operating under U.S. EPA and state regulations.
Tumwater Reclaimed Water Plant is a projected facility in Tumwater, Washington, serving approximately 19,638 people. It is designed to support water reclamation and reuse in the Pacific Northwest region.
LUMMI TRIBE STP serves approximately 3,022 people in Whatcom County, Washington. The plant is located within 50 km of the coast and discharges into the local watershed.
UtilityRadar indexes 248 wastewater treatment plants in Washington, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, ASOTIN MUNICIPAL STP has the highest designed capacity at 530 m3/day.