2,117 plants indexed. Showing 1,527 matching current filters.
Spain treats over 90% of its wastewater to secondary or higher standards. Major operators include ACCIONA, FCC Aqualia, and regional consortia. UtilityRadar indexes 2117 wastewater treatment plants in Spain with a combined designed capacity of 3,967,981 m³/day. The largest plant on file is LA ALJORRA, treating 70,417 m³/day.
Spain treats over 90% of its wastewater to secondary or higher standards. Major operators include ACCIONA, FCC Aqualia, and regional consortia.
UtilityRadar's directory currently lists 2,117 wastewater treatment plants across Spain. Together these plants represent a combined designed capacity of approximately 3,967,981 m³/day.
By treatment level, the directory contains 652 secondary, 307 advanced, 11 primary-treatment plants. Secondary treatment (typically activated sludge with biological nutrient removal) is the most common standard.
The largest plant indexed for Spain is LA ALJORRA, with a designed capacity of 70,417 m³/day.
Plant records are aggregated from publicly available regulatory data (US EPA ECHO, EU UWWTD reporting, national water authority publications), augmented by direct operator information and verified via Google Maps coordinates. Each record includes location, treatment level, capacity where known, operator and operational status. To browse plants by treatment level worldwide, see our secondary and advanced filter views, or read our guide to how sewage treatment works.
Sabero wastewater treatment plant in Castilla y León, Spain, serves 7,200 people with advanced treatment. It discharges 264.25 m³/day of treated effluent into the local watershed.
Velilla del Río Carrión wastewater treatment plant serves 2,500 people in Palencia, Castilla y León, Spain, with advanced treatment. It discharges 691.20 m³/day and has a designed capacity of 2,500 m³/day.
DUENAS wastewater treatment plant serves Dueñas, Castilla y León, Spain, with secondary treatment for a population of 5,700. It discharges 602.74 units of treated wastewater.
Carrión de los Condes wastewater treatment plant serves 5,000 people in Palencia, Castilla y León, Spain. It provides secondary treatment and has a designed capacity of 3,600 m³/day.
ASTUDILLO wastewater treatment plant serves the town of Astudillo in Castilla y León, Spain. It provides secondary treatment for a population of 2,600 and discharges 400 cubic meters of treated wastewater daily.
HONTORIA DEL PINAR wastewater treatment plant serves Hontoria del Pinar, Burgos, Castilla y León, Spain. It provides secondary treatment for a population of 2,600.
The Espinosa de los Monteros wastewater treatment plant in Castilla y León, Spain, serves a population of 10,700 with advanced treatment. It discharges 798.63 cubic meters of treated wastewater daily.
Piedrahita wastewater treatment plant in Piedrahíta, Castilla y León, Spain, serves a population of 3,444 with advanced treatment. It discharges 893.69 m³/day of treated water into the local watershed.
El Arenal wastewater treatment plant serves the town of El Arenal in Ávila, Castilla y León, Spain. It provides secondary treatment for a population of 6,000 with a designed capacity of 6,000 m³/day.
Matarrosa del Sil wastewater treatment plant serves the town of Toreno in Castilla y León, Spain. It provides secondary treatment for a population of 2,500 with a designed capacity of 2,500 m³/day.
Castrojeriz wastewater treatment plant serves the town of Castrojeriz in Castilla y León, Spain. It provides secondary treatment for a population of 2,500 and has a designed capacity of 2,500 m³/day.
CIGALES wastewater treatment plant in Cigales, Castilla y León, Spain, serves 3,600 people with advanced treatment. It discharges 769.95 m³/day into local water bodies.
NAVALENO wastewater treatment plant serves the town of Navaleno in Castilla y Leon, Spain. It provides secondary treatment for a population of 4,100 and has a designed capacity of 4,100 m³/day.
Villacastín wastewater treatment plant in Castilla y León, Spain, serves a population of 4,268 with advanced treatment. It discharges 725 m³/day, protecting local water resources.
NAVAS DE ORO wastewater treatment plant serves Nava de la Asunción in Castilla y León, Spain. It provides advanced treatment for a population of 3,625, with a designed capacity of 3,625 m³/day.
MACOTERA is an advanced wastewater treatment plant serving Santiago de la Puebla in Castilla y León, Spain. It treats wastewater from a population of 4,400 and discharges 301.37 cubic meters per day.
CERVERA DE PISUERGA wastewater treatment plant serves the town of Cervera de Pisuerga in Castilla y León, Spain. It provides advanced treatment for a population of 6,280 and discharges 534.25 cubic meters of treated wastewater.
Santa María del Páramo wastewater treatment plant serves the town of Santa María del Páramo in Castilla y León, Spain. It provides secondary treatment for a population of 3,680.
Vitigudino wastewater treatment plant serves the municipality of Vitigudino in Castilla y León, Spain. It provides secondary treatment for a population of 6,300 and has a designed capacity of 6,500 m³/day.
MATAPOZUELOS wastewater treatment plant serves the town of Matapozuelos in Castilla y León, Spain. It provides advanced treatment for a population of 2,000 with a designed capacity of 2,000 m³/day.
UtilityRadar indexes 2117 wastewater treatment plants in Spain, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, ESPINOSA DE LOS MONTEROS has the highest designed capacity at 10,700 m3/day.