248 plants indexed. Showing 86 matching current filters.
Albion S_T Facility is a secondary wastewater treatment plant serving 620 people in Albion, Washington. It discharges treated effluent into the local watershed, supporting downstream water quality in the Palouse River basin.
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.
Brewster STP is a secondary wastewater treatment plant serving 2,262 residents in Brewster, Washington. It discharges treated effluent into the Columbia River basin, supporting local water quality.
Bridgeport WWTP is a secondary treatment plant serving 2,405 people in Bridgeport, Washington. It discharges 757.08 m³/day of treated wastewater, with a designed capacity of 1,135.62 m³/day.
Buena WWTF is a secondary treatment plant in Buena, Washington, serving 210 people. It discharges 227.13 cubic meters of treated wastewater daily, with a designed capacity of 454.25 cubic meters.
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.
Colton STP is a secondary wastewater treatment plant in Colton, Washington, serving 395 people. It discharges 227.13 megaliters annually and has a designed capacity of 280.12 megaliters.
Conconully S_T FAC is a secondary treatment plant serving 524 people in Conconully, Washington. It discharges treated wastewater into the local watershed, supporting downstream water quality in the Okanogan River basin.
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.
Coulee City STP is a secondary treatment plant in Grant County, Washington, serving 565 people. It discharges treated wastewater inland, with a designed capacity of 272.55 and current volume of 264.98.
Coulee Dam S_T FAC is a secondary wastewater treatment plant serving 2,138 people in Coulee Dam, Washington. It discharges 946.35 megaliters annually and operates under US EPA NPDES regulations.
COWICHE STP is a secondary treatment plant serving 996 people in Cowiche, Washington. It discharges 794.94 thousand cubic meters annually into the local watershed.
Creston Wastewater Treatment Plant serves 235 people in Creston, Washington, with secondary treatment. The plant discharges treated wastewater into the local watershed, supporting downstream water quality in the Columbia River basin.
Cusick Wastewater Treatment Plant serves 360 residents in Cusick, Washington, with secondary treatment. It discharges 227.13 megaliters annually and has a designed capacity of 264.98 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.
DAVENPORT LAGOON is a secondary wastewater treatment plant in Davenport, Washington, serving 1,780 people. It discharges 605.67 megaliters per year and operates under the US Clean Water Act NPDES permit system.
DEER PARK POTW is a secondary treatment plant in Spokane County, Washington, serving 3,675 people. It discharges 972.85 units of treated wastewater and has a designed capacity of 2,634.64 units.
Diamond Lake STP is a secondary treatment plant in Pend Oreille County, Washington, serving 1,698 people. It discharges 276.34 million gallons per year and operates under U.S. EPA NPDES regulations.
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.
ELBE STP is a secondary treatment plant serving 176 people in Elbe, Washington. It discharges 30.28 megaliters of treated wastewater annually, with a designed capacity of 37.85 megaliters.