2,117 plants indexed. Showing 725 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.
PERALADA is an advanced wastewater treatment plant in Peralada, Catalunya, Spain. Serving approximately 2,908 people, it has a designed capacity of 4,002 m³/day and discharges 413.29 m³/day.
PANTANS DE MONTBARBAT is a secondary wastewater treatment plant serving Maçanet de la Selva, Catalunya, Spain. It treats wastewater for a population of 1,341 with a designed capacity of 3,687 m³/day.
Palau Saverdera wastewater treatment plant in Catalonia, Spain serves 1,806 people with secondary treatment. The plant discharges 637.86 m³/day and has a designed capacity of 5,000 m³/day.
BIGUES I RIELLS is a secondary wastewater treatment plant in Bigues i Riells del Fai, Catalunya, Spain. It serves approximately 5,000 people with a designed capacity of 4,600 m³/day and an average discharge of 725 m³/day.
Bescanó wastewater treatment plant in Catalonia, Spain serves 2,592 people with advanced treatment. It discharges 493.57 m³/day and has a designed capacity of 3,430 m³/day.
BESALU wastewater treatment plant serves Besalú, Catalunya, Spain. It provides advanced treatment for a population of 1,599, with a designed capacity of 3,510 m³/day.
Bellvei wastewater treatment plant serves the town of Bellvei in Catalunya, Spain. It provides secondary treatment and discharges treated water near the Mediterranean coast.
Begur wastewater treatment plant serves the coastal town of Begur in Catalunya, Spain. It provides secondary treatment for a population of 1,539 and discharges treated effluent near the Mediterranean coast.
L Aldea wastewater treatment plant serves Deltebre, Catalunya, Spain, treating municipal wastewater for a population of 2,232. It operates with secondary treatment and has a designed capacity of 6,400 m³/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.
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.
ARAIA wastewater treatment plant serves Albeiz, Asparrena in Euskadi, Spain. It provides secondary treatment for a population of 2,000 with a designed capacity of 3,700 m³/day.
LA ARBOLEDA is an advanced wastewater treatment plant in Valle de Trápaga-Trapagaran, Euskadi, Spain, serving 2,000 people. It discharges 362.49 m³/day of treated effluent and is located within 10 km of the coast.
LARRABETZU wastewater treatment plant serves the town of Larrabetzu in Euskadi, Spain, with advanced treatment for a population of 2,000. It discharges 663.36 m³/day of treated water.
EA is an advanced wastewater treatment plant in Ea, Euskadi, Spain, serving 2,228 people. It discharges 403.82 m³/day of treated wastewater near the coast of the Bay of Biscay.
Liendo wastewater treatment plant in Cantabria, Spain, serves 1,590 people with advanced treatment. It discharges 637.82 m³/day and is located within 10 km of the coast.
Santa Maria de Cayon wastewater treatment plant in Saron, Cantabria, Spain, serves 614 people with secondary treatment. It discharges 111.29 m³/day and has a designed capacity of 3,000 m³/day.
MERUELO wastewater treatment plant in Arnuero, Cantabria, Spain, serves a population of 1,361 with advanced treatment. The plant is closed but its designed capacity of 50,000 m³/day reflects its original scale.
GALIZANO is a secondary wastewater treatment plant in Ribamontán al Mar, Cantabria, Spain, serving 746 people. It discharges 405.56 m³/day and has a designed capacity of 2700 m³/day.
SELAYA wastewater treatment plant serves the municipality of Selaya in Cantabria, Spain, providing secondary treatment for a population of 3,150. The plant has a designed capacity of 3,500 m³/day and discharges 867.55 m³/day of treated effluent.
UtilityRadar indexes 2117 wastewater treatment plants in Spain, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, MERUELO has the highest designed capacity at 50,000 m3/day.