248 plants indexed.
RYDERWOOD STP is a secondary wastewater treatment plant in Ryderwood, Washington, serving a small population of 380. It discharges 378.54 cubic meters of treated wastewater daily.
TOUTLE STP is a secondary treatment plant in Cowlitz County, Washington, serving approximately 1,100 people. It discharges 946.35 cubic meters of treated wastewater daily into the local watershed.
Coupeville STP is a secondary treatment plant serving 2,155 people in Coupeville, Washington. It discharges 757 m³/day of treated wastewater near the coast of Puget Sound.
CONCRETE TREATMENT is a secondary wastewater treatment plant in Concrete, Washington, serving 641 people. It discharges 143.85 million gallons per year into the Skagit River basin.
SEKIU STP is a secondary wastewater treatment plant serving 538 people in Port Angeles, Washington. It discharges 378.54 m³/day of treated effluent near the Strait of Juan de Fuca.
Clallam Bay STP is a secondary treatment plant serving 780 people in Clallam Bay, Washington. It discharges approximately 454 m³/day and is located within 10 km of the Pacific coast.
Forks Treat STP is a secondary wastewater treatment plant in Forks, Washington, serving approximately 3,120 people. It discharges treated effluent into local waterways within the Olympic Peninsula watershed.
Carbonado S T FAC is a secondary wastewater treatment plant in Carbonado, Washington, serving 610 people. It discharges 113.56 megaliters annually and is designed for 378.54 megaliters, operating under U.S. EPA NPDES regulations.
FAIRFIELD STP is a secondary wastewater treatment plant serving Fairfield, Washington, USA. It treats approximately 595 residents with a designed capacity of 427.75 volume units and discharges 302.83 volume units.
GEORGE STP is a secondary wastewater treatment plant serving 690 people in George, Washington. It discharges 113.56 million gallons per year and has a designed capacity of 272.55 million gallons per year.
ASOTIN MUNICIPAL STP serves Vineland, Washington, treating wastewater for 1,255 people with secondary treatment. The plant discharges 355.83 million gallons per year into the local watershed.
North Bay WWTP in Belfair, Washington, serves a population of 4,175. The plant operates under the U.S. Clean Water Act, with a designed capacity of 1.00 million gallons per day.
Hawks Prairie Recl Water Satellite in Lacey, Washington serves approximately 18,779 people. The plant operates under the US Clean Water Act framework, with a designed capacity of 1.00 million gallons per day.
Tenino Wastewater Facility serves approximately 1,700 residents in Tenino, Washington. The plant has a designed capacity of 1.00 million gallons per day and operates under U.S. Clean Water Act regulations.
Airway Heights WWTP serves 6,220 people in Washington, USA. The plant discharges treated wastewater into local waterways under EPA NPDES regulations.
Port of Sunnyside Industrial WWTF is a small industrial wastewater treatment facility in Sunnyside, Washington, serving a population equivalent of 17. It operates under U.S. EPA and Washington state regulations.
Birch Bay STP serves 5,500 people in Cottonwood Beach, Washington. The plant operates under the US Clean Water Act NPDES permitting program for municipal wastewater treatment.
Liberty Lake STP serves 9,255 residents in Liberty Lake, Washington, as part of the municipal wastewater infrastructure. The plant operates under the U.S. Clean Water Act, with NPDES permits regulating its discharge to protect local water quality.
Yelm Wastewater Treat and Reclaim serves approximately 7,000 residents in North Yelm, Washington. The plant operates under U.S. Clean Water Act regulations with a designed capacity of 1.00 million gallons per day.
Winthrop S_T Facility serves Oroville, Washington, treating wastewater for approximately 510 residents. The plant operates under U.S. Clean Water Act regulations for small communities.
UtilityRadar indexes 248 wastewater treatment plants in Washington, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, FORKS TREAT STP has the highest designed capacity at 1,325 m3/day.