Wastewater plants in Washington

248 plants indexed. Showing 84 matching current filters.

84 plants matching filters

HARTSTENE POINTE STP

Mason County, Washington

Hartstene Pointe STP is a secondary treatment plant in Mason County, Washington, serving 860 people. It discharges 704.09 units of treated wastewater near the coast of Puget Sound.

Secondary 860

Belfair Wastewater and Water Reclaim

Belfair, Washington

Belfair Wastewater and Water Reclaim is a secondary treatment plant serving 1,791 people in Belfair, Washington. It discharges treated wastewater near the Hood Canal, a sensitive marine ecosystem.

Secondary 1,791

PENN COVE SD STP

Penn Cove Park, Washington

Penn Cove SD STP is a secondary treatment plant serving 577 people in Penn Cove Park, Washington. It discharges 151.42 megaliters of treated wastewater annually near the coast of Puget Sound.

Secondary 577

Kitsap Co SD 7 WWTP

Bainbridge Island, Washington

Kitsap Co SD 7 WWTP on Bainbridge Island, Washington, serves 750 people with secondary treatment. It discharges 492.10 volume units daily, with a designed capacity of 1059.91 units, and is located within 10 km of the coast.

Secondary 750

MANCHESTER STP

Manchester, Washington

Manchester STP is a secondary treatment plant serving 2,310 people in Manchester, Washington. It discharges 757.08 million gallons per year into the local watershed near Puget Sound.

Secondary 2,310

Fisherman Bay STP

Lopez Village, Washington

Fisherman Bay STP is a secondary treatment plant serving Lopez Village, Washington. It discharges treated wastewater near the coast of San Juan County, with a design capacity of 185.48 volume units.

Secondary 2,076

EASTSOUND WD STP

Eastsound, Washington

Eastsound WD STP is a secondary treatment plant serving 1,500 people on Orcas Island, Washington. It discharges treated wastewater into the marine environment near the San Juan Islands.

Secondary 1,500

King County Vashon WWTP

Vashon, Washington

King County Vashon WWTP is a secondary treatment plant serving 539 people on Vashon Island, Washington. It discharges treated wastewater near the coast of Puget Sound.

Secondary 539

TULALIP BAY STP

Tulalip Bay, Washington

Tulalip Bay STP is a secondary treatment plant serving 1,561 people in Tulalip Bay, Washington. It discharges treated wastewater into the Puget Sound coastal environment.

Secondary 1,561

TAHOLAH STP

Grays Harbor County, Washington

TAHOLAH STP is a secondary treatment plant serving 755 people in Grays Harbor County, Washington. It discharges 302.83 units of treated wastewater near the Pacific coast.

Secondary 755

SUQUAMISH STP

Port Madison Indian Reservation, Washington

SUQUAMISH STP is a secondary treatment plant serving 3,510 people on the Port Madison Indian Reservation in Washington, USA. It discharges 378.54 m³/day of treated wastewater near the Puget Sound coast.

Secondary 3,510

SOUTH BEND STP CS

Pacific County, Washington

South Bend STP CS is a secondary treatment plant serving 1,635 people in Pacific County, Washington. It discharges 632.16 million gallons per year, operating under the US Clean Water Act framework.

Secondary 1,635

Skagit Co SD2 Big Lake WWTP

Big Lake, Washington

Skagit Co SD2 Big Lake WWTP is a secondary treatment plant serving 1,835 people in Big Lake, Washington. It discharges treated wastewater into the local watershed, ultimately draining to Puget Sound.

Secondary 1,835

Freeland WWS

Island County, Washington

Freeland WWS is an advanced wastewater treatment plant projected to serve 1,427 people in Island County, Washington. It discharges 681.37 megaliters annually and is located within 10 km of the coast.

Advanced 1,427

Grand Mound WWTP

Centralia, Washington

Grand Mound WWTP is a secondary treatment facility serving 2,232 people in Centralia, Washington. It discharges 378.54 megaliters of treated wastewater annually, operating under U.S. EPA NPDES regulations.

Secondary 2,232

RUSTLEWOOD DEV STP

Walkers Landing, Washington

Rustlewood Dev STP is a secondary treatment plant serving 126 people in Walkers Landing, Washington. It discharges 37.85 m³/day of treated wastewater near the coast.

Secondary 126

LA CONNER TREATMENT

La Conner, Washington

La Conner Treatment is a secondary wastewater plant serving 1,115 people in La Conner, Washington. It discharges 567.81 thousand cubic meters annually and is located within 10 km of the coast.

Secondary 1,115

KINGSTON STP

Kingston, Washington

Kingston STP is a secondary treatment plant serving 1,871 people in Kingston, Washington. It discharges 435.32 million gallons per year and is located within 10 km of the coast.

Secondary 1,871

EVERSON S_T FACILITY

Everson, Washington

Everson S_T Facility is a secondary wastewater treatment plant serving 3,837 people in Everson, Washington. It discharges 454.25 million gallons per year and operates under US EPA NPDES regulations.

Secondary 3,837

WILKESON STP

Wilkeson, Washington

Wilkeson STP is a secondary treatment plant serving 475 residents in Wilkeson, Washington. It discharges treated wastewater into the local watershed, ultimately draining to the Puget Sound.

Secondary 475

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, King County Vashon WWTP has the highest designed capacity at 1,968 m3/day.

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