26,154 plants indexed worldwide.
Plants where treatment level information is not publicly available.
Corvallis STP serves approximately 52,450 residents in Corvallis, Oregon, treating municipal wastewater before discharge. The plant operates under the U.S. Clean Water Act framework, with NPDES permits regulating effluent quality.
VENETA STP serves Veneta, Oregon, treating wastewater for approximately 4,561 residents. The plant operates under U.S. EPA and Oregon DEQ regulations, discharging treated effluent to local waterways.
OAKRIDGE STP serves the community of Oakridge, Oregon, treating wastewater from approximately 3,148 residents. The plant discharges into the local watershed, ultimately contributing to the Willamette River basin.
Junction City STP serves approximately 4,870 residents in Junction City, Oregon. The plant operates under U.S. Clean Water Act regulations, with oversight from the Oregon Department of Environmental Quality.
Florence STP serves approximately 6,865 residents in Florence, Oregon. The plant operates under U.S. Clean Water Act regulations, discharging treated wastewater to the Siuslaw River estuary near the Pacific coast.
MWMC Eugene-Springfield STP serves over 215,000 people in Eugene, Oregon. The plant discharges treated wastewater into the Willamette River, a key tributary of the Columbia River system.
Cottage Grove STP serves approximately 9,745 residents in Cottage Grove, Oregon. The plant operates under U.S. EPA NPDES permitting and discharges treated wastewater to local waterways.
Independence STP serves the city of Independence, Oregon, treating municipal wastewater for a population of approximately 6,195. The plant operates under the U.S. Clean Water Act framework.
Dallas STP serves approximately 13,200 people in Polk County, Oregon, treating municipal wastewater before discharge. The plant operates under the U.S. Clean Water Act framework.
Woodburn POTW serves approximately 22,500 residents in Woodburn, Oregon. The plant operates under the U.S. Clean Water Act, with NPDES permits regulating its discharge to protect local waterways.
STAYTON STP is a municipal wastewater treatment plant in Stayton, Oregon, serving approximately 11,670 people. It operates under the US Clean Water Act framework, with NPDES permitting through the Oregon Department of Environmental Quality.
Salem Willow Lake STP in Keizer, Oregon serves approximately 258,000 people. The plant treats municipal wastewater and discharges into the Willamette River system, which flows into the Columbia River and ultimately the Pacific Ocean.
MT ANGEL STP serves 3,700 residents in Marion County, Oregon. The plant operates under the U.S. Clean Water Act, which requires secondary treatment for municipal wastewater facilities.
JEFFERSON STP serves approximately 2,560 residents in Jefferson, Oregon. The plant treats municipal wastewater and discharges into the local watershed within the Willamette River basin.
Rock Creek STP in Hillsboro, Oregon, serves over 305,000 people. The plant operates under the US Clean Water Act, ensuring treated effluent meets federal standards before discharge.
Forest Grove STP serves approximately 94,000 residents in Forest Grove, Oregon. The plant operates under the US Clean Water Act, treating wastewater before discharge to local waterways.
DURHAM STP serves over 363,000 people in Tigard, Oregon, as part of the region's municipal wastewater infrastructure. The plant discharges treated effluent into the Tualatin River watershed, which flows to the Willamette River and ultimately the Colu
Hillsboro Westside STP serves approximately 43,370 people in Hillsboro, Oregon. The plant operates under the U.S. Clean Water Act, which requires secondary treatment for municipal wastewater.
Tryon Creek STP in Milwaukie, Oregon serves approximately 78,460 people. The plant operates under the U. S. Clean Water Act, discharging treated wastewater into the Willamette River system.
Columbia Blvd STP is a major wastewater treatment plant in Portland, Oregon, serving over 720,000 people. It operates under the US Clean Water Act and EPA NPDES permit program.