2,117 plants indexed. Showing 1,594 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.
Duruelo de la Sierra wastewater treatment plant in Castilla y León, Spain, serves 3,000 people with advanced treatment. It discharges 474.66 m³/day into the local watershed, supporting the Duero River basin.
Covaleda wastewater treatment plant serves the town of Covaleda in Castilla y León, Spain, with advanced treatment for a population of 5,917. It discharges 856.21 cubic meters of treated water daily.
Berlanga de Duero wastewater treatment plant serves the municipality of Berlanga de Duero in Castilla y León, Spain. It provides secondary treatment for a population of 4,133.
ARCOS DE JALON wastewater treatment plant serves the town of Arcos de Jalón in Soria, Castilla y León, Spain. It provides secondary treatment for a population of 2,950.
ABEJAR wastewater treatment plant in Abejar, Castilla y León, Spain, serves 3,500 people with advanced treatment. It discharges 273.97 m³/day and has a designed capacity of 3,500 m³/day.
Villarramiel wastewater treatment plant serves the town of Villarramiel in Castilla y León, Spain, with secondary treatment for a population of 8,141.
Torquemada wastewater treatment plant serves 3,200 people in Castilla y León, Spain, with advanced treatment. It discharges 316 m³/day into the local watershed.
Barruelo de Santullán wastewater treatment plant serves approximately 6,229 people in Castilla y León, Spain. It provides secondary treatment and discharges 543.77 cubic meters of treated wastewater daily.
SAHAGUN wastewater treatment plant serves Sahagún, Castilla y León, Spain, with secondary treatment for a population of 5,694. The plant discharges treated effluent into local water bodies.
Carrizo de la Ribera wastewater treatment plant serves the town of Carrizo in Castilla y León, Spain, providing secondary treatment for a population of 9,000 with a designed capacity of 9,000 m³/day.
Villadiego wastewater treatment plant in Castilla y León, Spain, serves 2,000 people with secondary treatment. It discharges 522.83 cubic meters per day and has a designed capacity of 2,100 cubic meters per day.
Villasana de Mena wastewater treatment plant serves Valle de Mena, Burgos, in Castilla y León, Spain. It provides secondary treatment for a population of 3,596 and discharges 636.99 cubic meters per day.
SALAS DE LOS INFANTES wastewater treatment plant serves Ledanía de Hacinas y Salas de los Infantes in Castilla y León, Spain. It provides secondary treatment for a population of 7,000.
ROA wastewater treatment plant serves Roa, Castilla y León, Spain, providing secondary treatment for a population of 6,500. It discharges treated effluent into the local water system.
LUMBRALES wastewater treatment plant serves the town of Lumbrales in Castilla y León, Spain, with secondary treatment for a population of 4,000. It discharges treated wastewater into local watercourses within the Duero River basin.
Torre del Bierzo wastewater treatment plant serves 2,000 people in Castilla y León, Spain, with advanced treatment. It discharges 362.49 m³/day and operates under EU Urban Waste Water Treatment Directive standards.
TORENO is an advanced wastewater treatment plant in Toreno, Castilla y León, Spain, serving a population of 3,375. It discharges 592.47 m³/day of treated water into the local watershed.
ALCAZAREN wastewater treatment plant serves Hornillos de Eresma in Castilla y León, Spain. It provides secondary treatment for a population of 2,200 and has a designed capacity of 2,200 m³/day.
Torrecaballeros wastewater treatment plant in La Higuera, Segovia, Castilla y León, Spain, serves a population of 3,179 with advanced treatment. It discharges 541.51 m³/day of treated wastewater.
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.
UtilityRadar indexes 2117 wastewater treatment plants in Spain, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, CARRIZO DE LA RIBERA has the highest designed capacity at 9,000 m3/day.