26,154 plants indexed worldwide.
Plants where treatment level information is not publicly available.
Palouse Treatment Facility serves the town of Palouse, Washington, treating wastewater for approximately 1,015 residents. The plant discharges into the local watershed, contributing to the Palouse River basin.
OTHELLO SEWAGE LAGOONS serves Adams County, Washington, treating wastewater for approximately 7,420 people. The plant operates under the U.S. Clean Water Act, which requires secondary treatment for municipal facilities of this scale.
Orting S_T Facility serves approximately 6,770 residents in Orting, Washington. The plant operates under U.S. Clean Water Act regulations for municipal wastewater treatment.
Oroville S_T Facility is a municipal wastewater treatment plant serving Oroville, Washington, USA. It serves a population of 2,570 and operates under the US Clean Water Act framework.
OMAK STP serves Omak, Washington, treating wastewater for approximately 4,728 residents. The plant operates under the U.S. Clean Water Act framework, with state-level NPDES permitting ensuring environmental compliance.
Big Gulch WWTP serves Mukilteo, Washington, treating wastewater for approximately 27,656 residents. The plant operates under U.S. EPA and Washington State regulations, discharging treated effluent into the Puget Sound ecosystem.
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.
Whidbey NavalAir Station Oak Harbor is a wastewater treatment plant in Island County, Washington, serving approximately 7,500 people. The facility operates under U.S. EPA NPDES regulations for municipal wastewater.
Oak Harbor STP serves 24,200 people in Oak Harbor, Washington. The plant is located within 50 km of the coast and discharges into the Salish Sea via local waterways.
North Bend Treatment Plant serves approximately 5,830 residents in North Bend, Washington. It operates under the U.S. Clean Water Act, ensuring treated wastewater meets federal and state standards before discharge.
NEWPORT STP serves Newport, Washington, treating wastewater for approximately 3,040 residents. The plant operates under U.S. EPA and Washington state regulations, discharging into the Pend Oreille River watershed.
Mount Vernon Treatment serves approximately 31,940 people in Mount Vernon, Washington. The plant is located within 50 km of the coast and discharges into the Skagit River system, which flows into Puget Sound.
Moses Lake STP serves approximately 10,820 residents in Moses Lake, Washington. The plant discharges into the local watershed, supporting water quality in the Columbia River basin.
Sand Dunes WWTP serves 16,836 people in Grant County, Washington. The plant operates under the US Clean Water Act, with NPDES permits regulating its discharge to protect local water quality.
Montesano WWPCP serves 3,232 people in Montesano, Washington, discharging treated wastewater into the Chehalis River basin. The plant operates under the US Clean Water Act NPDES permit program.
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.