248 plants indexed. Showing 137 matching current filters.
Ilwaco Wastewater Treatment Plant serves approximately 8,100 residents in Ilwaco, Washington. It is located within 50 km of the Pacific coast, discharging treated effluent into the Columbia River estuary.
Kalama Wastewater Treatment Plant serves the city of Kalama, Washington, USA. It treats wastewater from approximately 2,515 residents and discharges into the local watershed.
Kennewick POTW is a municipal wastewater treatment plant serving approximately 74,665 people in Kennewick, Washington. It operates under the U. S. Clean Water Act and EPA NPDES permitting framework.
King County South Treatment Plant in Renton, Washington, serves approximately 787,000 people. It is a major regional facility within 50 km of the Pacific coast, operating under the US Clean Water Act.
KITTITAS STP serves the community of Kittitas, Washington, treating wastewater for approximately 1,430 residents. The plant is located inland, over 50 km from the coast, and discharges into the local watershed.
LA CENTER STP serves approximately 2,935 residents in La Center, Washington. The plant treats municipal wastewater before discharging into the local watershed.
Lake Stevens STP serves approximately 28,210 people in Snohomish County, Washington. The plant operates under the U.S. Clean Water Act and discharges treated wastewater into the local watershed.
LAKOTA STP serves approximately 50,050 people in Federal Way, Washington. The plant is located near the coast and discharges into the Puget Sound watershed.
Leavenworth City of POTW serves approximately 1,970 residents in Leavenworth, Washington. The plant treats municipal wastewater before discharging into the local watershed.
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.
Long Beach WWTP serves approximately 3,475 residents in Long Beach, Washington. The plant has a designed capacity of 1.00 million gallons per day and is located near the Pacific coast.
LOTT Budd Inlet Treatment Plant serves Olympia, Washington, treating wastewater for over 62,000 people. The plant discharges into Budd Inlet, part of the Puget Sound estuary.
LUMMI TRIBE STP serves approximately 3,022 people in Whatcom County, Washington. The plant is located within 50 km of the coast and discharges into the local watershed.
LYNDEN STP serves Lynden, Washington, treating wastewater from approximately 12,060 residents. The plant operates under U.S. Clean Water Act regulations with NPDES permitting.
The Lynnwood Treatment System in Edmonds, Washington serves approximately 35,860 people. It is located within 50 km of the coast and discharges into the local watershed.
Marine Park WWTF in Vancouver, Washington serves nearly 50,000 people. The plant operates under the U.S. Clean Water Act, with NPDES permits regulating its discharge to protect local water quality.
Marysville Lagoon serves approximately 60,660 people in Marysville, Washington. The plant operates under the US Clean Water Act and EPA NPDES permitting framework.
Medical Lake STP serves approximately 6,860 residents in Medical Lake, Washington. The plant operates under U.S. Clean Water Act regulations for municipal wastewater treatment.
Midway Sewer District WWTP serves Des Moines, Washington, treating wastewater for a population of approximately 43,616. The plant is located within 50 km of the coast and discharges into the Puget Sound watershed.
Miller Creek STP serves Normandy Park, Washington, treating wastewater for over 31,000 residents. The plant is located near the coast and discharges into the Puget Sound watershed.