2,117 plants indexed. Showing 1,147 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.
VALLS wastewater treatment plant serves the municipality of Valls in Catalonia, Spain. It has a designed capacity of 1.00 and serves a population of 13,143.
VALLBONA D ANOIA CAPELLADES is a wastewater treatment plant serving Vallbona d'Anoia, Catalunya, Spain. It serves a population of approximately 24,679 and has a designed capacity of 1.00 cubic meters.
VALL DEL GES TORELLO is a wastewater treatment plant serving Torelló, Catalunya, Spain. It serves a population of approximately 14,551 and operates under the EU Urban Waste Water Treatment Directive.
ULLDECONA wastewater treatment plant serves Ulldecona, Catalunya, Spain, with a designed capacity of 1.00. It is located within 50 km of the coast and serves a population of 4,037.
TREMP wastewater treatment plant serves Talarn in Catalunya, Spain, with a population equivalent of 3,573. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this size.
TOSSA DE MAR wastewater treatment plant serves Tossa de Mar, a coastal town in Catalunya, Spain. It treats wastewater for approximately 11,480 residents, discharging into the Mediterranean Sea.
TORTOSA ROQUETES wastewater treatment plant serves Tortosa, Catalunya, Spain, with a population of 31,916. The plant has a designed capacity of 1.00 (units unspecified) and operates under EU Urban Waste Water Treatment Directive standards.
TORROELLA DE MONTGRI ESTARTIT wastewater treatment plant serves Torroella de Montgrí, Catalunya, Spain, with a population equivalent of 10,933. The facility has a designed capacity of 1.00 and is located within 50 km of the Mediterranean coast.
Torres de Segre wastewater treatment plant serves the municipality of Torres de Segre in Catalunya, Spain. It treats wastewater from a population of approximately 2,724 people.
The Torredembarra wastewater treatment plant serves Creixell in Catalonia, Spain, with a population equivalent of 33,513. It is located within 50 km of the Mediterranean coast.
TORDERA wastewater treatment plant serves the town of Tordera in Catalunya, Spain, with a designed capacity of 1.00 and a population equivalent of 10,261. It operates under the EU Urban Waste Water Treatment Directive.
TONA wastewater treatment plant serves the municipality of Tona in Catalunya, Spain. The facility has a designed capacity of 1.00 and serves a population of approximately 6,908.
TERRASSA wastewater treatment plant serves Rubí, Barcelona, Spain, with a population equivalent of 195,573. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for large agglomerations.
TEIA MARESME SUD is a wastewater treatment plant serving Teià, Catalunya, Spain. It serves a population of 88,122 and is located within 50 km of the coast.
TARREGA wastewater treatment plant serves Tàrrega, Catalunya, Spain, treating wastewater for approximately 24,250 residents. It operates under EU Urban Waste Water Treatment Directive 91/271/EEC.
Tarragona wastewater treatment plant serves over 170,000 people in Catalunya, Spain. Located near the Port of Tarragona, it discharges into the Mediterranean Sea via the Francolí River.
Taradell wastewater treatment plant serves the municipality of Taradell in Catalunya, Spain. It treats wastewater from a population of 5,510 and discharges into the local water system.
SURIA wastewater treatment plant serves Súria, a town in Catalonia, Spain. The facility treats municipal wastewater for approximately 8,400 residents, supporting local water quality in the Llobregat River basin.
SOLSONA wastewater treatment plant serves the city of Solsona in Catalunya, Spain, with a population equivalent of 8,337. The plant discharges treated effluent into the local river system, contributing to the protection of the Ebro basin.
SILS VIDRERES wastewater treatment plant serves Sils, Catalunya, Spain, with a designed capacity of 1.00 volume units. It supports a population of 12,952 and operates under EU Urban Waste Water Treatment Directive standards.
UtilityRadar indexes 2117 wastewater treatment plants in Spain, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, VALLS has the highest designed capacity at 1 m3/day.