18,358 plants indexed worldwide.
Biological process removes dissolved organic matter after primary treatment.
Halsey STP is a secondary treatment plant serving 740 residents in Halsey, Oregon. It discharges 378.54 m³/day of treated wastewater, with a designed capacity of 745.72 m³/day.
Halfway STP is a secondary treatment plant serving the small community of Halfway, Oregon. It discharges treated wastewater into the local watershed, supporting downstream water quality in the Pine Creek drainage.
Grand Ronde STP is a secondary treatment plant serving about 1,000 people in Grand Ronde, Oregon. It discharges treated wastewater into local waterways, supporting the Yamhill River basin.
Gold Hill STP is a secondary treatment plant in Jackson County, Oregon, serving a population of 1,472. It discharges 643.52 million gallons per year and has a designed capacity of 1,324.89 million gallons per year.
Glide Idleyld Park is a secondary wastewater treatment plant in Douglas County, Oregon, serving a population of 1,690. It discharges 416.40 units of treated effluent and has a designed capacity of 624.59 units.
Glendale STP is a secondary wastewater treatment plant serving approximately 1,100 residents in Glendale, Oregon. The facility discharges treated effluent into local waterways within the Umpqua River basin.
Garibaldi STP is a secondary wastewater treatment plant serving 1,373 people in Garibaldi, Oregon. Located within 10 km of the Pacific coast, it discharges treated effluent into the local watershed.
Fossil STP is a secondary treatment plant serving the town of Fossil, Oregon. It discharges treated wastewater into the local watershed, supporting downstream water quality in the John Day River basin.
ELKTON STP is a secondary treatment plant serving 180 people in Elkton, Oregon. It discharges 75.71 units of treated wastewater daily, with a designed capacity of 105.99 units.
ELGIN STP is a secondary wastewater treatment plant serving Elgin, Oregon. It discharges treated effluent into the local watershed, supporting downstream water quality in the Grande Ronde River basin.
ECHO STP is a secondary treatment plant in Umatilla County, Oregon, serving 690 people. It discharges 227.13 volume units daily and has a designed capacity of 454.25 volume units.
DUFUR STP is a secondary treatment plant in Wasco County, Oregon, serving a population of 600. It discharges 166.56 megaliters of treated wastewater annually, with a designed capacity of 227.12 megaliters.
DRAIN STP is a secondary wastewater treatment plant serving 1,151 people in Drain, Oregon. It discharges 526.17 million gallons per year and has a designed capacity of 1,135.62 million gallons per year.
DONALD STP is a secondary wastewater treatment plant serving Donald, Oregon. It treats approximately 640 residents with a designed capacity of 291.48 million gallons per day.
Dexter Sanitary Service District is a secondary treatment plant serving 505 people in Dexter, Oregon. It discharges 151.42 megaliters of treated wastewater annually, operating under U.S. EPA NPDES regulations.
DAYVILLE STP is a secondary treatment plant serving 160 people in Dayville, Oregon. It discharges 53.00 million gallons per day and has a designed capacity of 140.06 million gallons per day.
DAYTON STP is a secondary wastewater treatment plant serving Dayton, Oregon. It treats an average of 738.16 thousand cubic meters per year, with a designed capacity of 870.64 thousand cubic meters per year.
Culver STP is a secondary wastewater treatment plant serving 850 people in Culver, Oregon. It discharges 151.42 megaliters per year and has a designed capacity of 340.69 megaliters.
COVE STP is a secondary wastewater treatment plant in Union County, Oregon, serving a population of 625. It discharges 151.42 megaliters per year and has a designed capacity of 227.12 megaliters per year.
CONDON STP is a secondary treatment plant serving 770 people in Condon, Oregon. It discharges 264.98 thousand cubic meters of treated wastewater annually.