18,358 plants indexed worldwide.
Biological process removes dissolved organic matter after primary treatment.
Seneca STP is a secondary wastewater treatment plant serving the small community of Seneca, Oregon. It has a designed capacity of 685.16 volume units and discharges treated effluent into the local watershed.
SCIO STP is a secondary wastewater treatment plant serving Scio, Oregon. It treats municipal wastewater for a population of 710 with a designed capacity of 3,686.98 cubic meters per day.
Salishan STP is a secondary wastewater treatment plant in Lincoln County, Oregon, serving approximately 1,100 people. It discharges treated effluent near the Siletz Bay area on the Pacific coast.
RUFUS STP is a secondary wastewater treatment plant in Rufus, Oregon, serving 270 people. It discharges 155.20 million gallons per year and operates under the US Clean Water Act.
Rockaway Beach STP is a secondary treatment plant serving 1,500 people in Rockaway Beach, Oregon. It discharges treated wastewater near the Pacific coast, operating under US EPA NPDES regulations.
RICHLAND STP is a secondary treatment plant in Baker County, Oregon, serving a small population of 250. It discharges treated wastewater into the local watershed, supporting downstream water quality.
Prairie City STP is a secondary treatment plant serving 1,145 people in Prairie City, Oregon. It discharges treated wastewater into local waterways, supporting the John Day River basin.
POWERS STP is a secondary treatment plant serving 689 residents in Powers, Oregon. It discharges 223.34 million gallons per year and operates under US EPA NPDES regulations.
Port Orford STP is a secondary treatment plant serving 1,135 people in Port Orford, Oregon. It discharges 147.63 million gallons annually and is located within 10 km of the Pacific coast.
Pilot Rock STP is a secondary treatment plant serving 1,540 people in Umatilla County, Oregon. It discharges 643.52 thousand cubic meters annually within the Columbia River Basin.
Alpine County Service District is a secondary wastewater treatment plant in Alpine, Oregon, serving a small population of 191. It discharges 75.71 million gallons per year into local waterways.
PARKDALE STP is a secondary wastewater treatment plant serving 416 people in Parkdale, Oregon. It discharges 234.70 megaliters annually and has a designed capacity of 378.54 megaliters.
PAISLEY STP is a secondary treatment plant serving 250 people in Paisley, Oregon. It discharges 75.71 m³/day of treated wastewater, with a designed capacity of 189.27 m³/day.
North Powder STP is a secondary treatment plant serving 490 people in North Powder, Oregon. It discharges 151.42 megaliters annually and operates under U.S. EPA NPDES regulations.
NETARTS OCEANSIDE SANITARY DISTRICT is a secondary treatment plant in Oceanside, Oregon, serving about 1,867 people. It discharges 492.10 megaliters of treated wastewater annually, with a designed capacity of 1,514.16 megaliters.
Mount Vernon STP is a secondary wastewater treatment plant in Mount Vernon, Oregon, serving a population of 695. It discharges treated effluent into the local watershed, supporting downstream water quality.
MOSIER STP is a secondary treatment plant in Wasco County, Oregon, serving 430 people. It discharges 113.56 units of treated wastewater and has a designed capacity of 321.76 units.
MONROE STP is a secondary treatment plant serving 610 people in Monroe, Oregon. It discharges 446.68 volume units daily with a designed capacity of 681.37, operating under U.S. Clean Water Act regulations.
MITCHELL STP is a secondary wastewater treatment plant in Mitchell, Oregon, serving a population of 270. It discharges 102.21 volume units and has a designed capacity of 102.21.
Mill City Sewage System is a secondary treatment plant serving 1,585 people in Mill City, Oregon. It discharges an average of 223.34 thousand cubic meters per year into the local watershed.