248 plants indexed. Showing 86 matching current filters.
Grand Coulee STP is a secondary treatment plant serving 1,884 people in Grand Coulee, Washington. It discharges 783.58 thousand cubic meters of treated wastewater annually, operating under the US Clean Water Act.
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.
GRANGER POTW is a secondary treatment plant serving Parker, Washington. It discharges treated wastewater into the Yakima River basin, supporting local water quality.
Harrah S_T Facility is a secondary wastewater treatment plant serving 512 people in Harrah, Washington. It discharges 151.42 megaliters annually and has a designed capacity of 302.83 megaliters.
Harrington S T FAC is a secondary wastewater treatment plant in Harrington, Washington, serving 420 people. It discharges 253.62 million gallons annually and operates under the US Clean Water Act.
IONE LAGOON is a secondary wastewater treatment plant in Pend Oreille County, Washington, serving 215 people. It discharges treated effluent into the local watershed, supporting downstream water quality.
KLICKITAT STP is a secondary wastewater treatment plant in Murdock, Washington, serving 525 people. It discharges treated effluent into the Columbia River basin, supporting local water quality.
LaCrosse Wastewater Facility serves 315 people in LaCrosse, Washington, with secondary treatment. The plant discharges 246.05 million gallons per year into the local watershed.
LEWIS CO STP 2 is a secondary wastewater treatment plant serving 311 people in Lewis County, Washington, USA. It discharges 302.83 cubic meters of treated effluent daily.
Lind S T Facility is a secondary wastewater treatment plant serving 560 people in Lind, Washington. It discharges approximately 212,000 gallons per day into the local watershed.
LOON LAKE TREATMENT is a secondary wastewater plant in Stevens County, Washington, serving 634 people. It discharges treated effluent into the local watershed, supporting downstream water quality.
Mabton POTW is a secondary treatment plant serving approximately 2,290 people in Mabton, Washington. It discharges treated wastewater into the Yakima River basin, an important agricultural watershed in the Pacific Northwest.
Mansfield S_T FAC is a secondary treatment plant serving 325 people in Mansfield, Washington. It discharges 151.42 megaliters of treated wastewater annually, operating under U.S. EPA NPDES regulations.
MESA S_T FACILITY is a secondary wastewater treatment plant in Mesa, Washington, serving 440 people. It discharges 158.99 units of treated effluent and has a designed capacity of 234.69 units.
Metaline Falls S_T FAC is a secondary treatment plant serving 238 people in Pend Oreille Village, Washington. It discharges treated wastewater into the local watershed under U.S. EPA NPDES regulations.
Metaline Municipal STP is a secondary treatment plant serving 160 people in Metaline, Washington. It discharges 166.56 units of treated wastewater, operating under US EPA and Washington state regulations.
MORTON STP is a secondary wastewater treatment plant serving 1,125 people in Morton, Washington. It discharges 757.08 cubic meters per day and has a designed capacity of 2,346.95 cubic meters per day.
Mossyrock S_T Facility is a secondary wastewater treatment plant in Lewis County, Washington, serving a small population of 533. It discharges treated effluent into the local watershed, supporting downstream water quality.
NACHES STP is a secondary wastewater treatment plant serving 725 people in Naches, Washington. It discharges treated effluent into the local watershed within the Yakima River basin.
Naselle Youth Camp STF is a secondary treatment plant in Grays Harbor County, Washington, serving 300 people. It discharges 132.49 volume units and operates under US Clean Water Act regulations.