18,358 plants indexed worldwide.
Biological process removes dissolved organic matter after primary treatment.
MESA S_T FACILITY is a secondary wastewater treatment plant in Mesa, Washington, serving 440 people. It discharges 158.99 units of treated effluent and has a designed capacity of 234.69 units.
Grand Mound WWTP is a secondary treatment facility serving 2,232 people in Centralia, Washington. It discharges 378.54 megaliters of treated wastewater annually, operating under U.S. EPA NPDES regulations.
Rock Island WWTP is a projected secondary treatment plant in Rock Island, Washington, serving a population of 1,075. It discharges treated wastewater into the local watershed.
Rustlewood Dev STP is a secondary treatment plant serving 126 people in Walkers Landing, Washington. It discharges 37.85 m³/day of treated wastewater near the coast.
Mansfield S_T FAC is a secondary treatment plant serving 325 people in Mansfield, Washington. It discharges 151.42 megaliters of treated wastewater annually, operating under U.S. EPA NPDES regulations.
Lind S T Facility is a secondary wastewater treatment plant serving 560 people in Lind, Washington. It discharges approximately 212,000 gallons per day into the local watershed.
LaCrosse Wastewater Facility serves 315 people in LaCrosse, Washington, with secondary treatment. The plant discharges 246.05 million gallons per year into the local watershed.
La Conner Treatment is a secondary wastewater plant serving 1,115 people in La Conner, Washington. It discharges 567.81 thousand cubic meters annually and is located within 10 km of the coast.
Vantage Treatment is a secondary wastewater plant in Vantage, Washington, serving 292 people. It discharges 56.78 megaliters annually with a design capacity of 340.69 megaliters.
Snoqualmie Pass UD Treatment is a secondary treatment plant in Hyak, Washington, serving about 1,985 people. It discharges 711.66 million gallons per year into the local watershed.
Kingston STP is a secondary treatment plant serving 1,871 people in Kingston, Washington. It discharges 435.32 million gallons per year and is located within 10 km of the coast.
Harrington S T FAC is a secondary wastewater treatment plant in Harrington, Washington, serving 420 people. It discharges 253.62 million gallons annually and operates under the US Clean Water Act.
Harrah S_T Facility is a secondary wastewater treatment plant serving 512 people in Harrah, Washington. It discharges 151.42 megaliters annually and has a designed capacity of 302.83 megaliters.
GARFIELD S_T FACILITY is a secondary wastewater treatment plant in Elberton, Washington, serving 640 people. It discharges 264.98 million gallons per year and operates under US EPA NPDES regulations.
Farmington S_T FAC is a secondary wastewater treatment plant in Farmington, Washington, serving a small population of 123. It discharges treated water into the local watershed, contributing to the region's water quality management.
Everson S_T Facility is a secondary wastewater treatment plant serving 3,837 people in Everson, Washington. It discharges 454.25 million gallons per year and operates under US EPA NPDES regulations.
ENTIAT S_T FACILITY is a secondary treatment plant in Chelan County, Washington, serving 1,635 people. It discharges 302.83 megaliters per year and operates under US EPA NPDES regulations.
Endicott S_T Facility is a secondary treatment plant serving 360 people in Endicott, Washington. It discharges 567.81 volume units and operates under US EPA NPDES regulations.
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.
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.