248 plants indexed. Showing 108 matching current filters.
Fisherman Bay STP is a secondary treatment plant serving Lopez Village, Washington. It discharges treated wastewater near the coast of San Juan County, with a design capacity of 185.48 volume units.
Eastsound WD STP is a secondary treatment plant serving 1,500 people on Orcas Island, Washington. It discharges treated wastewater into the marine environment near the San Juan Islands.
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.
Winlock S_T Facility is a secondary treatment plant serving 1,340 people in Winlock, Washington. It discharges 450.46 thousand gallons per day into local waterways.
Wilbur Wastewater Treatment Plant serves the town of Wilbur, Washington, providing secondary treatment. It discharges approximately 643.52 megaliters annually and has a designed capacity of 965.28 megaliters.
Waterville S_T Facility is a secondary treatment plant in Kittitas County, Washington, serving 1,140 people. It discharges 594.31 units of treated wastewater and has a designed capacity of 446.68 units.
Washtucna S_T Facility is a secondary wastewater treatment plant serving 205 people in Washtucna, Washington. It discharges 189.27 cubic meters per day, operating under U.S. EPA and Washington state regulations.
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.
King County Vashon WWTP is a secondary treatment plant serving 539 people on Vashon Island, Washington. It discharges treated wastewater near the coast of Puget Sound.
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.
Tulalip Bay STP is a secondary treatment plant serving 1,561 people in Tulalip Bay, Washington. It discharges treated wastewater into the Puget Sound coastal environment.
TAHOLAH STP is a secondary treatment plant serving 755 people in Grays Harbor County, Washington. It discharges 302.83 units of treated wastewater near the Pacific coast.
SUQUAMISH STP is a secondary treatment plant serving 3,510 people on the Port Madison Indian Reservation in Washington, USA. It discharges 378.54 m³/day of treated wastewater near the Puget Sound coast.
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.
UtilityRadar indexes 248 wastewater treatment plants in Washington, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, King County Vashon WWTP has the highest designed capacity at 1,968 m3/day.