248 plants indexed.
REPUBLIC S_T FACILITY is a secondary wastewater treatment plant in Ferry County, Washington, serving 1,220 people. It discharges 264.98 thousand cubic meters annually and operates under US EPA NPDES regulations.
Reardan S_T Facility is a secondary wastewater treatment plant serving 608 residents in Reardan, Washington. It discharges 151.42 volume units daily and operates under US EPA NPDES regulations.
Pateros S_T Facility is a secondary wastewater treatment plant serving 630 people in Pateros, Washington. It discharges treated effluent into the Columbia River basin.
Oakesdale S_T Facility is a secondary wastewater treatment plant in Whitman County, Washington, serving approximately 450 people. It discharges 946.35 cubic meters of treated effluent daily.
North Bonneville S_T FAC is a secondary wastewater treatment plant in Washington, USA, serving 965 people with a discharge volume of 473.18 units. It operates under the US Clean Water Act framework.
Mossyrock S_T Facility is a secondary wastewater treatment plant in Lewis County, Washington, serving a small population of 533. It discharges treated effluent into the local watershed, supporting downstream water quality.
Metaline Falls S_T FAC is a secondary treatment plant serving 238 people in Pend Oreille Village, Washington. It discharges treated wastewater into the local watershed under U.S. EPA NPDES regulations.
Metaline Municipal STP is a secondary treatment plant serving 160 people in Metaline, Washington. It discharges 166.56 units of treated wastewater, operating under US EPA and Washington state regulations.
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.
Freeland WWS is an advanced wastewater treatment plant projected to serve 1,427 people in Island County, Washington. It discharges 681.37 megaliters annually and is located within 10 km of the coast.
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.
UtilityRadar indexes 248 wastewater treatment plants in Washington, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, KINGSTON STP has the highest designed capacity at 1,741 m3/day.