2,117 plants indexed.
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.
OSSA DE MONTIEL is an advanced wastewater treatment plant serving Ossa de Montiel, Castilla-La Mancha, Spain. It treats wastewater for a population of 5,833 with a discharge volume of 989.00.
NERPIO wastewater treatment plant serves the town of Nerpio in Castilla-La Mancha, Spain, with advanced treatment for a population of 2,100. It discharges 378 m³/day of treated water into the local watershed.
POZUELO DE CALATRAVA wastewater treatment plant in Ciudad Real, Castilla-La Mancha, Spain, serves 3,000 people with advanced treatment, discharging 688 m³/day.
SERRADA wastewater treatment plant serves La Seca in Castilla y León, Spain, treating municipal wastewater for a population of 3,000 with secondary treatment.
LA SECA wastewater treatment plant serves the municipality of La Seca in Castilla y León, Spain, with secondary treatment for a population of 3,000. It discharges 256.03 cubic meters of treated wastewater daily.
Santovenia wastewater treatment plant serves Valladolid, Spain, treating municipal wastewater for approximately 7,000 residents with secondary treatment. The plant discharges treated effluent into the local water system.
RENEDO wastewater treatment plant serves Renedo de Esgueva, Valladolid, in Castilla y León, Spain.
MAYORGA wastewater treatment plant serves the town of Mayorga in Castilla y León, Spain. It provides secondary treatment for a population of approximately 4,986.
CARPIO wastewater treatment plant serves Carpio, Valladolid, in Castilla y León, Spain. It provides secondary treatment for a population of 3,000 and has a designed capacity of 3,000 m³/day.
ALAEJOS wastewater treatment plant serves the municipality of Alaejos in Castilla y León, Spain. It provides secondary treatment for a population of 4,141.
Vinuesa wastewater treatment plant in Castilla y León, Spain, serves 6,500 people with advanced treatment. It discharges 453.43 m³/day, protecting local water resources.
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.
UtilityRadar indexes 2117 wastewater treatment plants in Spain, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, RENEDO has the highest designed capacity at 8,504 m3/day.