248 plants indexed. Showing 137 matching current filters.
College Place WWTP serves approximately 8,780 people in Walla Walla County, Washington. The plant operates under the US Clean Water Act, which mandates secondary treatment for municipal wastewater facilities.
COLVILLE SEW LAGOON is a municipal wastewater treatment plant serving Colville, Washington. It treats wastewater for approximately 5,116 residents and discharges into the local watershed.
Connell STP is a municipal wastewater treatment plant serving approximately 5,150 people in Connell, Washington. The facility operates under the U.S. Clean Water Act framework, with state-issued NPDES permits governing its discharge.
Cowlitz Water Pollution Control Plant in Longview, Washington serves approximately 39,877 people. The facility operates under the U.S. Clean Water Act, discharging treated wastewater into the Columbia River system.
DAYTON STP serves Dayton, Washington, treating wastewater for approximately 3,068 residents. The plant operates under U.S. EPA and Washington state regulations, discharging into the local watershed.
Duvall WWTP serves approximately 6,715 residents in Duvall, Washington. The plant operates under U.S. Clean Water Act regulations, ensuring treated effluent meets state water quality standards before discharge.
East Wenatchee STP serves approximately 13,220 people in East Wenatchee, Washington. The plant discharges treated wastewater into the Columbia River basin, supporting local water quality.
Edmonds STP serves approximately 73,790 residents in Edmonds, Washington. The plant is located within 50 km of the coast and discharges treated wastewater into the Puget Sound ecosystem.
Ellensburg STP serves approximately 18,250 people in Ellensburg, Washington. The plant discharges treated wastewater into the Yakima River basin, supporting local water quality and downstream ecosystems.
Enumclaw WWTP serves approximately 10,920 residents in Enumclaw, Washington. The plant operates under U.S. Clean Water Act regulations with a designed capacity of 1.00 million gallons per day.
Ephrata S_T Facility is a municipal wastewater treatment plant serving approximately 6,890 people in Ephrata, Washington, United States. It operates under the US Clean Water Act framework.
Everett WWTP serves approximately 149,000 people in Washington, USA. The facility is located near the coast and discharges into the Puget Sound ecosystem.
Ferndale STP serves approximately 11,530 residents in Ferndale, Washington. The plant operates under the U.S. Clean Water Act, with a designed capacity of 1.00 million gallons per day.
Friday Harbor STP serves 2,680 residents in Friday Harbor, Washington. The plant discharges treated wastewater into the surrounding marine environment of the Salish Sea.
Gig Harbor STP serves approximately 14,947 residents in Washington, USA. The plant discharges treated wastewater into the Puget Sound watershed, supporting local water quality and marine ecosystem health.
GOLDENDALE POTW serves Centerville, Washington, treating wastewater for approximately 3,425 residents. The plant operates under U.S. Clean Water Act regulations for small communities.
GRANDVIEW STP serves approximately 10,920 residents in Grandview, Washington. The plant operates under the U.S. Clean Water Act, which requires secondary treatment for municipal wastewater.
Granite Falls STP serves approximately 3,370 residents in Granite Falls, Washington. The plant operates under the U.S. Clean Water Act, ensuring treated wastewater meets environmental standards before discharge.
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.
Hoquiam Wastewater Treatment Plant serves 8,650 people in Hoquiam, Washington. Located within 50 km of the coast, it discharges into Grays Harbor estuary on the Pacific coast.