248 plants indexed. Showing 244 matching current filters.
Tamoshan WWTP is a secondary treatment plant in Olympia, Washington, serving 292 people. It discharges 189.27 cubic meters of treated wastewater daily, located within 10 km of the coast.
Boston Harbor WWTF is a secondary treatment plant in Olympia, Washington, serving 616 people. It discharges 170.34 million gallons per year and is located within 10 km of the coast.
Carlyon Beach WWTP is a secondary treatment plant in Washington, USA, serving 385 people. It discharges 227.13 megaliters annually and has a designed capacity of 454.25 megaliters.
NACHES STP is a secondary wastewater treatment plant serving 725 people in Naches, Washington. It discharges treated effluent into the local watershed within the Yakima River basin.
MORTON STP is a secondary wastewater treatment plant serving 1,125 people in Morton, Washington. It discharges 757.08 cubic meters per day and has a designed capacity of 2,346.95 cubic meters per day.
Mabton POTW is a secondary treatment plant serving approximately 2,290 people in Mabton, Washington. It discharges treated wastewater into the Yakima River basin, an important agricultural watershed in the Pacific Northwest.
McCleary STP is an advanced wastewater treatment plant serving approximately 1,981 residents in McCleary, Washington. It discharges treated effluent into the local watershed, supporting downstream water quality in Grays Harbor County.
Langley S_T Facility is a secondary treatment plant in Langley, Washington, serving 1,045 people. It discharges 302.83 megaliters annually and is located within 10 km of the coast.
La Push Sewage Treatment Plant is a secondary treatment facility serving approximately 1,000 residents in La Push, Washington. It discharges treated wastewater near the Quileute Harbor Marina on the Pacific coast.
Glenwood STP and Collection is a secondary treatment plant serving 808 people in Glenwood, Washington. It discharges 208.20 megaliters of treated wastewater annually and operates under the US Clean Water Act framework.
Wishram Sewer System in Wishram Heights, Washington, serves 184 people with secondary treatment. The plant discharges 113.56 megaliters annually and has a designed capacity of 378.54 megaliters.
Dallesport Treatment is a secondary wastewater plant in Klickitat County, Washington, serving 1,625 people. It discharges 378.54 megaliters annually and operates under U.S. EPA NPDES regulations.
Pacific Beach STP is a secondary treatment plant serving 1,950 people in Pacific Beach, Washington. It discharges 378.54 m³/day of treated wastewater near the Pacific coast.
GRANGER POTW is a secondary treatment plant serving Parker, Washington. It discharges treated wastewater into the Yakima River basin, supporting local water quality.
Grand Coulee STP is a secondary treatment plant serving 1,884 people in Grand Coulee, Washington. It discharges 783.58 thousand cubic meters of treated wastewater annually, operating under the US Clean Water Act.
ELMA STP is a secondary wastewater treatment plant serving 3,540 people in Elma, Washington. It discharges 791.15 million gallons per year into the local watershed.
Eatonville STP is a secondary treatment plant serving 2,775 people in Eatonville, Washington. It discharges treated wastewater into the local watershed, ultimately draining to the Pacific Ocean.
Woodbrook Sewage Treatment Plant in Cowlitz County, Washington, serves 364 people with secondary treatment. The plant discharges 249.84 thousand gallons per day and has a designed capacity of 333.12 thousand gallons per day.
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.
UtilityRadar indexes 248 wastewater treatment plants in Washington, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, MORTON STP has the highest designed capacity at 2,347 m3/day.