14,814 plants indexed. Showing 6,378 matching current filters.
MONROE STP serves approximately 17,330 people in Monroe, Washington. The plant operates under the US Clean Water Act, with a designed capacity of 1.00 million gallons per day.
Brightwater Treatment Plant in Maltby, Washington serves approximately 597,000 people. It is a major facility in the Puget Sound region, operating under U. S. EPA and Washington State regulations.
West Point WWTP in Seattle, Washington, serves over 1.3 million people. It is a major coastal treatment plant discharging into Puget Sound, operating under the US Clean Water Act.
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.
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.
Marysville Lagoon serves approximately 60,660 people in Marysville, Washington. The plant operates under the US Clean Water Act and EPA NPDES permitting framework.
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.
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.
West Longview WWTP serves approximately 16,629 people in Longview, Washington. The plant discharges treated wastewater into the Columbia River basin, supporting downstream water quality in the Pacific Northwest.
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.
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.
REDONDO STP serves Federal Way, Washington, treating wastewater for approximately 35,420 residents. The plant operates under U.S. EPA and Washington state regulations, discharging treated effluent into the Puget Sound 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.
LA CENTER STP serves approximately 2,935 residents in La Center, Washington. The plant treats municipal wastewater before discharging into the local watershed.
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.
CENT KITSAP REG STP is a municipal wastewater treatment plant serving approximately 44,476 people in Brownsville, Washington. It operates under the US Clean Water Act framework with NPDES permitting.
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.
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.
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.
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.
UtilityRadar indexes 14814 wastewater treatment plants in United States, with treatment level, capacity, operator and discharge data on each record.
Among the plants on this page, the most-referenced operator is King County Wastewater Treatment Division. UtilityRadar's records show 1 plant linked to this operator.
Among the indexed plants, MONROE STP has the highest designed capacity at 1 m3/day.