Wastewater plants in Washington

248 plants indexed. Showing 98 matching current filters.

98 plants matching filters

North Bay WWTP

Belfair, Washington

North Bay WWTP in Belfair, Washington, serves a population of 4,175. The plant operates under the U.S. Clean Water Act, with a designed capacity of 1.00 million gallons per day.

Not Reported 4,175 Low

Tenino Wastewater Facility

Tenino, Washington

Tenino Wastewater Facility serves approximately 1,700 residents in Tenino, Washington. The plant has a designed capacity of 1.00 million gallons per day and operates under U.S. Clean Water Act regulations.

Not Reported 1,700 Low

Airway Heights WWTP

Airway Heights, Washington

Airway Heights WWTP serves 6,220 people in Washington, USA. The plant discharges treated wastewater into local waterways under EPA NPDES regulations.

Not Reported 6,220 Low

Port of Sunnyside Industrial WWTF

Sunnyside, Washington

Port of Sunnyside Industrial WWTF is a small industrial wastewater treatment facility in Sunnyside, Washington, serving a population equivalent of 17. It operates under U.S. EPA and Washington state regulations.

Not Reported 17 Low

BIRCH BAY STP

Cottonwood Beach, Washington

Birch Bay STP serves 5,500 people in Cottonwood Beach, Washington. The plant operates under the US Clean Water Act NPDES permitting program for municipal wastewater treatment.

Not Reported 5,500 Low

LIBERTY LAKE STP

Liberty Lake, Washington

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.

Not Reported 9,255 Low

Yelm Wastewater Treat and Reclaim

North Yelm, Washington

Yelm Wastewater Treat and Reclaim serves approximately 7,000 residents in North Yelm, Washington. The plant operates under U.S. Clean Water Act regulations with a designed capacity of 1.00 million gallons per day.

Not Reported 7,005 Low

WINTHROP S_T FACILITY

Oroville, Washington

Winthrop S_T Facility serves Oroville, Washington, treating wastewater for approximately 510 residents. The plant operates under U.S. Clean Water Act regulations for small communities.

Not Reported 510 Low

WINSLOW TREATMENT

Bainbridge Island, Washington

Winslow Treatment serves Bainbridge Island, Washington, with a designed capacity of 1.00 million gallons per day. The plant treats wastewater from a population of 2,385 and discharges into the Puget Sound ecosystem.

Not Reported 2,385 Low

SUNNYSIDE POTW

Sunnyside, Washington

Sunnyside POTW is a municipal wastewater treatment plant serving approximately 16,010 people in Sunnyside, Washington. It operates under the U.S. Clean Water Act framework.

Not Reported 16,010 Low

SELAH S_T FACILITY

Selah, Washington

Selah S_T Facility is a wastewater treatment plant in Selah, Washington, serving a population of approximately 5,100. It operates under the US Clean Water Act and EPA NPDES permitting framework.

Not Reported 5,113 Low

RAYMOND STP

Pacific County, Washington

Raymond STP is a municipal wastewater treatment plant in Pacific County, Washington, serving a population of 3,664. The facility has a designed capacity of 1.00 million gallons per day.

Not Reported 3,664 Low

PROSSER WWTP

Benton County, Washington

Prosser WWTP serves approximately 5,780 people in Benton County, Washington. The plant discharges treated wastewater into the regional watershed, supporting local water quality and downstream ecosystems.

Not Reported 5,780 Low

PE ELL S_T FACILITY

Centralia, Washington

PE ELL S_T FACILITY is a wastewater treatment plant in Centralia, Washington, serving approximately 635 people. It operates under the US Clean Water Act framework.

Not Reported 635 Low

OKANOGAN S_T FAC

Okanogan, Washington

Okanogan S_T FAC is a wastewater treatment plant serving approximately 2,585 people in Okanogan, Washington, USA. The facility discharges into the local watershed within the Columbia River basin.

Not Reported 2,585 Low

LUMMI TRIBE STP

Whatcom County, Washington

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.

Not Reported 3,022 Low

Long Beach WWTP

Long Beach, Washington

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.

Not Reported 3,475 Low

Leavenworth City of POTW

Leavenworth, Washington

Leavenworth City of POTW serves approximately 1,970 residents in Leavenworth, Washington. The plant treats municipal wastewater before discharging into the local watershed.

Not Reported 1,970 Low

Kalama Wastewater Treatment Plant

Kalama, Washington

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.

Not Reported 2,515 Low

EPHRATA S_T FACILITY

Ephrata, Washington

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.

Not Reported 6,890 Low

Frequently asked

How many wastewater treatment plants are in Washington?

UtilityRadar indexes 248 wastewater treatment plants in Washington, with treatment level, capacity, operator and discharge data on each record.

What is the largest wastewater treatment plant in Washington?

Among the indexed plants, North Bay WWTP has the highest designed capacity at 1 m3/day.

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