18,358 plants indexed worldwide.
Biological process removes dissolved organic matter after primary treatment.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Wilkeson STP is a secondary treatment plant serving 475 residents in Wilkeson, Washington. It discharges treated wastewater into the local watershed, ultimately draining to the Puget Sound.
TWISP S_T FACILITY is a secondary treatment plant in Okanogan County, Washington, serving 925 people. It discharges treated wastewater into the local watershed, contributing to the region's water quality management.
Tonasket S_T Facility is a secondary treatment plant serving 1,025 people in Tonasket, Washington. It discharges 757.08 m³/day of treated wastewater, with a designed capacity of 946.35 m³/day.
Toledo STP is a secondary wastewater treatment plant serving 540 people in Toledo, Washington. It discharges treated effluent into the local watershed, operating under US EPA and Washington state regulations.
Tekoa S_T Facility is a secondary treatment plant serving 820 people in Tekoa, Washington. It discharges 757.08 cubic meters of treated wastewater daily.
Stevens Pass Sewer District is a secondary treatment plant in Chelan County, Washington, serving 384 people. It discharges treated wastewater into the local watershed, contributing to the region's water quality management.
SPANGLE S_T FACILITY is a secondary wastewater treatment plant serving 297 people in Spangle, Washington. It discharges 75.71 million gallons per year and has a designed capacity of 151.42 million gallons.
Soap Lake STP is a secondary treatment plant serving approximately 1,735 residents in Soap Lake, Washington. It discharges treated wastewater into the local watershed, supporting water quality in the region.
Pomeroy WWTP is a secondary treatment plant serving 1,425 people in Pomeroy, Washington. It discharges treated wastewater into the local watershed, operating under U.S. EPA NPDES regulations.
South Prairie Area wastewater treatment plant serves 482 people in South Prairie, Washington, with secondary treatment. It discharges treated wastewater into the local watershed, contributing to the Puyallup River basin.