248 plants indexed. Showing 109 matching current filters.
Colton STP is a secondary wastewater treatment plant in Colton, Washington, serving 395 people. It discharges 227.13 megaliters annually and has a designed capacity of 280.12 megaliters.
Peshastin POTW is a secondary treatment plant serving 1,016 people in Peshastin, Washington. It discharges treated wastewater into the local watershed, supporting downstream water quality in the Wenatchee River basin.
Hartstene Pointe STP is a secondary treatment plant in Mason County, Washington, serving 860 people. It discharges 704.09 units of treated wastewater near the coast of Puget Sound.
Belfair Wastewater and Water Reclaim is a secondary treatment plant serving 1,791 people in Belfair, Washington. It discharges treated wastewater near the Hood Canal, a sensitive marine ecosystem.
Penn Cove SD STP is a secondary treatment plant serving 577 people in Penn Cove Park, Washington. It discharges 151.42 megaliters of treated wastewater annually near the coast of Puget Sound.
Kitsap Co SD 7 WWTP on Bainbridge Island, Washington, serves 750 people with secondary treatment. It discharges 492.10 volume units daily, with a designed capacity of 1059.91 units, and is located within 10 km of the coast.
Manchester STP is a secondary treatment plant serving 2,310 people in Manchester, Washington. It discharges 757.08 million gallons per year into the local watershed near Puget Sound.
ROOSEVELT LAGOON is a secondary treatment plant serving 50 people in Klickitat County, Washington. It discharges 18.93 megaliters of treated wastewater annually.
KLICKITAT STP is a secondary wastewater treatment plant in Murdock, Washington, serving 525 people. It discharges treated effluent into the Columbia River basin, supporting local water quality.
LEWIS CO STP 2 is a secondary wastewater treatment plant serving 311 people in Lewis County, Washington, USA. It discharges 302.83 cubic meters of treated effluent daily.
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.
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.