248 plants indexed. Showing 86 matching current filters.
WARDEN DOMESTIC STP is a secondary treatment plant serving 2,690 people in Grant County, Washington. It discharges 681.37 megaliters annually and operates under U.S. EPA NPDES regulations.
Vader S_T Facility is a secondary treatment plant serving 625 people in Vader, Washington. It discharges 454.25 megaliters annually and operates under the US Clean Water Act framework.
LOON LAKE TREATMENT is a secondary wastewater plant in Stevens County, Washington, serving 634 people. It discharges treated effluent into the local watershed, supporting downstream water quality.
South Bend STP CS is a secondary treatment plant serving 1,635 people in Pacific County, Washington. It discharges 632.16 million gallons per year, operating under the US Clean Water Act framework.
Skagit Co SD2 Big Lake WWTP is a secondary treatment plant serving 1,835 people in Big Lake, Washington. It discharges treated wastewater into the local watershed, ultimately draining to Puget Sound.
ST JOHN S_T FACILITY is a secondary wastewater treatment plant in Saint John, Washington, serving 523 people. It discharges treated water into the local watershed.
Royal City S_T FAC is a secondary wastewater treatment plant in Royal City, Washington, serving a population of 1,815. It discharges 946.35 megaliters per year and operates under the US Clean Water Act.
Rosalia S_T Facility is a secondary wastewater treatment plant serving 640 residents in Rosalia, Washington, USA. It operates under the US Clean Water Act with an NPDES permit framework.
Rockford S_T Facility is a secondary wastewater treatment plant serving 447 people in Freeman, Washington. It discharges 492.10 volume units and operates under U.S. EPA NPDES permitting.
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.
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.
UtilityRadar indexes 248 wastewater treatment plants in Washington, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, Grand Mound WWTP has the highest designed capacity at 1,438 m3/day.