183 plants indexed.
ARLINGTON STP is a secondary wastewater treatment plant in Arlington, Oregon, serving a population of 610. It discharges 189.27 megaliters annually and has a designed capacity of 567.81 megaliters.
Arch Cape STP is a secondary treatment plant serving 328 residents in Clatsop County, Oregon. It discharges 257.41 megaliters of treated wastewater annually, operating under the US Clean Water Act.
AMITY STP is a secondary treatment plant serving Amity, Oregon, with a population of 1,490. It discharges 757.08 m³/day and has a designed capacity of 582.95 m³/day.
ADRIAN STP is a secondary wastewater treatment plant serving 140 people in Adrian, Oregon. It discharges treated wastewater into local waterways, operating under U.S. EPA and Oregon DEQ regulations.
ADAIR VILLAGE STP is a secondary treatment plant in Adair Village, Oregon, serving 615 people. It discharges 264.98 units of treated wastewater daily, with a designed capacity of 1203.76 units.
Westfir STP is a secondary treatment plant serving 160 people in Westfir, Oregon. It discharges 113.56 megaliters of treated wastewater annually, operating under U.S. EPA NPDES regulations.
CRESWELL STP is a secondary treatment plant serving Creswell, Oregon, USA. It treats wastewater for approximately 4,000 residents with a daily discharge volume of 908.50 units.
ST PAUL STP is a secondary wastewater treatment plant in Marion County, Oregon, serving a small population of 354. It discharges treated effluent into the local watershed, contributing to the Willamette River basin.
Hubbard STP is an advanced wastewater treatment plant serving 2,285 residents in Hubbard, Oregon. It discharges 492.10 million gallons per year into local waterways.
Gervais STP is a secondary wastewater treatment plant in Gervais, Oregon, serving approximately 2,080 people. It discharges treated effluent into local waterways, supporting the Willamette River basin.
Aumsville STP is a secondary treatment plant in Marion County, Oregon, serving 3,730 people. It discharges 870.65 thousand cubic meters annually, operating under US EPA NPDES regulations.
HOODLAND STP is a secondary treatment plant in Welches, Oregon, serving 4,000 people. It discharges 957.71 thousand cubic meters annually and operates under US EPA NPDES regulations.
Klamath County School District wastewater treatment plant serves Henley, Oregon, with secondary treatment. It discharges 121.13 million gallons per year into the local watershed.
Warrenton STP is a municipal wastewater treatment plant in Warrenton, Oregon, serving approximately 7,385 people. It is located within 50 km of the Pacific coast and operates under U.S. EPA and Oregon DEQ regulations.
Vernonia STP is a municipal wastewater treatment plant serving approximately 2,300 residents in Vernonia, Oregon, USA. The facility discharges treated effluent into the local watershed under the Clean Water Act regulatory framework.
UMATILLA STP serves approximately 5,948 residents in Umatilla, Oregon. The plant discharges treated wastewater into the Columbia River basin, supporting local water quality and downstream ecosystems.
Sweet Home STP serves approximately 8,790 people in Linn County, Oregon. The plant operates under the U.S. Clean Water Act, with NPDES permits regulating its discharge to protect local waterways.
Sutherlin STP serves approximately 7,950 people in Douglas County, Oregon, as part of the municipal wastewater infrastructure. The plant operates under U.S. EPA NPDES permitting.
Sheridan STP serves the community of Sheridan, Oregon, treating municipal wastewater. The plant operates under U.S. Clean Water Act regulations, ensuring treated effluent meets environmental standards.
SEASIDE STP serves approximately 11,820 residents in Seaside, Oregon. Located within 50 km of the Pacific coast, the plant discharges treated wastewater into the local watershed.
UtilityRadar indexes 183 wastewater treatment plants in Oregon, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, HOODLAND STP has the highest designed capacity at 3,407 m3/day.