248 plants indexed. Showing 184 matching current filters.
Glenwood STP and Collection is a secondary treatment plant serving 808 people in Glenwood, Washington. It discharges 208.20 megaliters of treated wastewater annually and operates under the US Clean Water Act framework.
Wishram Sewer System in Wishram Heights, Washington, serves 184 people with secondary treatment. The plant discharges 113.56 megaliters annually and has a designed capacity of 378.54 megaliters.
Dallesport Treatment is a secondary wastewater plant in Klickitat County, Washington, serving 1,625 people. It discharges 378.54 megaliters annually and operates under U.S. EPA NPDES regulations.
GRANGER POTW is a secondary treatment plant serving Parker, Washington. It discharges treated wastewater into the Yakima River basin, supporting local water quality.
Grand Coulee STP is a secondary treatment plant serving 1,884 people in Grand Coulee, Washington. It discharges 783.58 thousand cubic meters of treated wastewater annually, operating under the US Clean Water Act.
ELMA STP is a secondary wastewater treatment plant serving 3,540 people in Elma, Washington. It discharges 791.15 million gallons per year into the local watershed.
Eatonville STP is a secondary treatment plant serving 2,775 people in Eatonville, Washington. It discharges treated wastewater into the local watershed, ultimately draining to the Pacific Ocean.
Woodbrook Sewage Treatment Plant in Cowlitz County, Washington, serves 364 people with secondary treatment. The plant discharges 249.84 thousand gallons per day and has a designed capacity of 333.12 thousand gallons per day.
RYDERWOOD STP is a secondary wastewater treatment plant in Ryderwood, Washington, serving a small population of 380. It discharges 378.54 cubic meters of treated wastewater daily.
TOUTLE STP is a secondary treatment plant in Cowlitz County, Washington, serving approximately 1,100 people. It discharges 946.35 cubic meters of treated wastewater daily into the local watershed.
CONCRETE TREATMENT is a secondary wastewater treatment plant in Concrete, Washington, serving 641 people. It discharges 143.85 million gallons per year into the Skagit River basin.
Forks Treat STP is a secondary wastewater treatment plant in Forks, Washington, serving approximately 3,120 people. It discharges treated effluent into local waterways within the Olympic Peninsula watershed.
Carbonado S T FAC is a secondary wastewater treatment plant in Carbonado, Washington, serving 610 people. It discharges 113.56 megaliters annually and is designed for 378.54 megaliters, operating under U.S. EPA NPDES regulations.
FAIRFIELD STP is a secondary wastewater treatment plant serving Fairfield, Washington, USA. It treats approximately 595 residents with a designed capacity of 427.75 volume units and discharges 302.83 volume units.
GEORGE STP is a secondary wastewater treatment plant serving 690 people in George, Washington. It discharges 113.56 million gallons per year and has a designed capacity of 272.55 million gallons per year.
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.
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.
UtilityRadar indexes 248 wastewater treatment plants in Washington, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, ELMA STP has the highest designed capacity at 1,817 m3/day.