2,117 plants indexed. Showing 4 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.
EDAR de Adeje Arona is a major wastewater treatment plant serving 238,333 people in Adeje, Tenerife, Canary Islands, Spain. It operates under the EU Urban Waste Water Treatment Directive, ensuring coastal water quality.
CADIZ SAN FERNANDO wastewater treatment plant serves Cádiz, Andalucía, Spain, with a population equivalent of 223,580. It operates under the EU Urban Waste Water Treatment Directive, which mandates advanced treatment for large agglomerations discharg
EL PRAT DE LLOBREGAT wastewater treatment plant serves over 1.3 million people in the Barcelona metropolitan area, Spain. It discharges treated effluent into the Mediterranean Sea via the Llobregat River delta.
GALINDO is a major wastewater treatment plant in Sestao, Euskadi, Spain, serving over 1.2 million people. It is located near the coast and plays a key role in protecting the Bay of Biscay.
UtilityRadar indexes 2117 wastewater treatment plants in Spain, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, EDAR de Adeje Arona has the highest designed capacity at 1 m3/day.