26,154 plants indexed worldwide.
Plants where treatment level information is not publicly available.
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.
GRESHAM STP serves approximately 119,000 people in Gresham, Oregon. The plant operates under the US Clean Water Act, with NPDES permits regulating its discharge to protect local water quality.
Wilsonville STP is a municipal wastewater treatment plant serving approximately 22,000 residents in Wilsonville, Oregon. It operates under the U.S. Clean Water Act and discharges treated effluent into the Willamette River.
SANDY STP serves 6,240 people in Clackamas County, Oregon. The plant treats municipal wastewater and discharges to local waterways under U.S. Clean Water Act regulations.
Molalla STP serves approximately 7,950 residents in Molalla, Oregon. The plant discharges treated wastewater into local waterways within the Willamette River basin.
ESTACADA STP is a municipal wastewater treatment plant serving approximately 2,250 residents in Estacada, Oregon, United States. The facility discharges into the local watershed within the Clackamas River basin.
CANBY STP serves approximately 15,140 people in Clackamas County, Oregon. The plant operates under the US Clean Water Act framework, discharging treated wastewater into the local watershed.
Tri City WPCP in Oregon City, Oregon serves about 141,676 people. The plant operates under the US Clean Water Act and EPA NPDES permitting framework.
Kellogg Creek STP serves Milwaukie, Oregon, treating wastewater for approximately 88,705 residents. The plant operates under the U. S. Clean Water Act, discharging treated effluent into the Kellogg Creek watershed, which flows to the Willamette River
ALVA WWT serves approximately 5,300 residents in Woods County, Oklahoma. The plant operates under US Clean Water Act regulations for municipal wastewater treatment.
WAGONER PWA WWT serves Wagoner, Oklahoma, treating wastewater for approximately 7,669 residents. The plant discharges into local waterways under U.S. EPA NPDES regulations.