18,348 plants indexed worldwide.
Biological process removes dissolved organic matter after primary treatment.
Arnac-Pompadour 2 is a secondary treatment plant serving 2,080 people in Nouvelle-Aquitaine, France. It discharges 371 m³/day of treated wastewater into the local watershed.
ARNAD wastewater treatment plant serves Arnad in Valle d'Aosta, Italy, with secondary treatment. It handles a population of 1,700 and has a designed capacity of 13,000 m³/day.
Arneburg IGPA Stendal Ost is a secondary treatment plant in Arneburg, Saxony-Anhalt, Germany, serving 1,713 people with a designed capacity of 2,200 m³/day.
ARNEDILLO is a secondary wastewater treatment plant in Arnedillo, La Rioja, Spain, serving a population of 2,183. It discharges 229.05 m³/day of treated wastewater into the local watershed.
ARNEGARD LAGOON is a secondary treatment plant in McKenzie County, North Dakota, serving 115 people. It discharges 37.85 million gallons per year and operates under US EPA NPDES regulations.
Arnett WWT is a secondary treatment plant in Ellis County, Oklahoma, serving 520 people. It discharges 264.98 thousand cubic meters per year and operates under US EPA NPDES regulations.
Arnold STP is a secondary wastewater treatment plant serving 900 people in Ganns, California. It discharges 302.83 megaliters annually and operates under U.S. EPA and state regulations.
ARNOLD WWTP serves the community of Arnold, Nebraska, providing secondary treatment for a population of 912. The plant discharges treated wastewater into the local watershed.
Arnolds Cove Court is a secondary wastewater treatment plant in Arnold's Cove, Newfoundland and Labrador, Canada, serving 668 residents. It discharges treated effluent near the coast of Newfoundland.
Arnolds Cove Red is a secondary wastewater treatment plant in Arnold's Cove, Newfoundland and Labrador, Canada, serving 668 people.
Arnolds Cove Wharf is a secondary treatment plant serving 668 residents in Arnold's Cove, Newfoundland and Labrador, Canada.
Arnschwang wastewater treatment plant in Nößwartling, Bavaria, Germany serves about 2,164 people with secondary treatment. The plant has a designed capacity of 3,500 m³/day and discharges 436.75 m³/day.
Arnulfo R Gomez wastewater treatment plant serves 913 people in Amulfo R Gomez, Durango, Mexico. It provides secondary treatment with a designed capacity of 138.24 volume units.
Aroland Lagoon is a secondary wastewater treatment plant in Thunder Bay District, Ontario, Canada, serving a small population of 200.
Arosa Luen is a secondary treatment plant serving 187 people in Lüen, Graubünden, Switzerland. It discharges 84.88 m³/day of treated wastewater.
Arpas Szennyviztisztito Telep is a secondary treatment plant serving Rábapatona, Hungary. It treats wastewater for 633 people with a designed capacity of 1,375 m³/day.
Arpin WWTP is a secondary treatment plant serving 354 people in the Town of Arpin, Wisconsin. It discharges 113.56 megaliters annually and operates under US EPA NPDES regulations.
ARQUA POLESINE VIA GARIBALDI is a secondary wastewater treatment plant in Arquà Polesine, Veneto, Italy. It serves a population of 969 and has a designed capacity of 1,000 m³/day.
ARQUENNES wastewater treatment plant in Seneffe, Hainaut, Belgium, serves 181 people with secondary treatment. The plant is now closed.
Arraiolos Norte is a secondary treatment plant serving 400 people in Arraiolos, Évora, Portugal. It discharges 66.69 m³/day of treated wastewater, operating under EU Urban Waste Water Treatment Directive standards.