18,348 plants indexed worldwide.
Biological process removes dissolved organic matter after primary treatment.
Arraiolos Poente is a secondary wastewater treatment plant serving 2,600 people in Arraiolos, Évora, Portugal. It has a designed capacity of 3,000 m³/day and discharges 433.5 m³/day.
ARRE is a secondary wastewater treatment plant in Årre, Denmark, serving 750 people. It discharges 699.75 m³/day and is located within 10 km of the coast.
Arriba Town Of wastewater treatment plant serves the small community of Arriba, Colorado, with secondary treatment. It discharges treated water into the local watershed, supporting downstream ecosystems.
ARRILD wastewater treatment plant serves Toftlund, Denmark, treating wastewater for 659 people. The facility provides secondary treatment and discharges 244.33 m³/day.
Arronches wastewater treatment plant serves the town of Arronches in Portalegre, Portugal. It provides secondary treatment for a population of 2,100, discharging 350.13 cubic meters of treated effluent daily.
Arrow Rock WWTP is a secondary treatment plant serving 216 people in Arrow Rock, Missouri. It discharges 60.57 units of treated wastewater daily, with a designed capacity of 83.28 units.
ARROYO DE SAN SERVAN wastewater treatment plant serves Arroyo de San Serván, Extremadura, Spain. It provides secondary treatment for a population of 4,200 with a designed capacity of 8,000 m³/day.
ARROYO DEL OJANCO is a secondary wastewater treatment plant serving Segura de la Sierra, Andalucía, Spain. It treats wastewater for a population of 2,748 with a designed capacity of 2,748 m³/day.
Arroyo Hondo wastewater treatment plant serves a small community in Aguascalientes, Mexico, with secondary treatment. It discharges 34.56 cubic meters daily, operating at 40% of its designed capacity of 86.40 cubic meters.
Arroyo Seco wastewater treatment plant in Querétaro, Mexico, serves about 1,013 people with secondary treatment. It discharges 95.90 cubic meters of treated wastewater daily.
Arruda dos Vinhos wastewater treatment plant serves 5,400 people in Lisbon district, Portugal. It provides secondary treatment and discharges 900.35 m³/day of treated effluent.
ARSAC wastewater treatment plant serves the commune of Arsac in Nouvelle-Aquitaine, France. It provides secondary treatment for a population of 2,912 and is located within 10 km of the Atlantic coast.
ARTA_TERME wastewater treatment plant in Arta Terme, Friuli-Venezia Giulia, Italy, serves 1,500 people with secondary treatment. It has a designed capacity of 4,000 m³/day and discharges 800 m³/day.
ARTAJONA wastewater treatment plant serves the town of Artajona in Navarre, Spain. It provides secondary treatment for a population of 1,697 and has a designed capacity of 3,400 m³/day.
ARTANA wastewater treatment plant serves Artana, Comunitat Valenciana, Spain. It provides secondary treatment for a population of 1,490 and has a designed capacity of 3,570 m³/day.
ARTEGNA_LOC_PALUT is a secondary treatment plant in Artegna, Friuli-Venezia Giulia, Italy, serving 933 people. It discharges treated wastewater into the local watershed, ultimately draining into the Adriatic Sea.
ARTHON EN RETZ wastewater treatment plant serves Chaumes-en-Retz in Pays de la Loire, France. It provides secondary treatment for a population of 2,016 and discharges treated effluent near the Atlantic coast.
Arthur Lagoon is a secondary wastewater treatment plant serving the small community of Arthur, North Dakota, USA. It discharges treated wastewater into local waterways, supporting the Red River Basin.
ARTHUR STL is a secondary wastewater treatment plant in Ida County, Iowa, serving 272 people. It discharges 151.42 cubic meters of treated effluent daily.
ARTIGUELOUTAN 2 is a secondary treatment plant serving Artigueloutan, Nouvelle-Aquitaine, France. It treats wastewater for about 4,100 people with a designed capacity of 6,000 m³/day.