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.
Santa Maria de Palautordera wastewater treatment plant serves the town in Catalunya, Spain. It treats wastewater for approximately 9,435 residents under EU regulatory standards.
Santa Eulalia de Roncana wastewater treatment plant serves Lliçà d'Amunt, Catalunya, Spain, with a designed capacity of 1.00 volume units. It treats wastewater for a population of 7,440 under EU regulatory standards.
Santa Coloma de Farners wastewater treatment plant serves 12,165 people in Catalunya, Spain. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this size.
SANT SADURNI D ANOIA wastewater treatment plant serves Subirats in Catalunya, Spain, with a designed capacity of 1.00 volume unit. It operates under the EU Urban Waste Water Treatment Directive.
SANT QUIRZE SAFAJA wastewater treatment plant serves the municipality of Sant Quirze Safaja in Catalunya, Spain. The plant has a designed capacity of 1.00 and serves a population of 3,395.
SANT POL DE MAR wastewater treatment plant serves Sant Pol de Mar, Catalunya, Spain, with a designed capacity of 1.00 and a population of 10,774. It operates under EU Urban Waste Water Treatment Directive standards.
Sant Pere de Ribes-Sitges wastewater treatment plant serves over 40,000 people in Catalunya, Spain. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
Sant Joan les Fonts wastewater treatment plant serves the town of Sant Joan les Fonts in Catalunya, Spain. It treats wastewater for approximately 5,954 residents as part of the region's municipal infrastructure.
Sant Joan de les Abadesses wastewater treatment plant serves the town in Catalunya, Spain. It treats wastewater from a population of approximately 4,000, discharging into the local river system.
Sant Jaume de Llierca wastewater treatment plant serves the municipality of Argelaguer in Catalunya, Spain. It treats wastewater from a population of approximately 2,328 under the EU Urban Waste Water Treatment Directive.
Sant Hilari Sacalm wastewater treatment plant serves the town of Sant Hilari Sacalm in Catalunya, Spain. It has a designed capacity of 1.00 and serves a population of approximately 4,909.
SANT FRUITOS NAVARCLES SANT PEDOR is a wastewater treatment plant serving Sant Fruitós de Bages, Catalunya, Spain. It treats wastewater for approximately 17,643 people.
Sant Feliu de Llobregat wastewater treatment plant serves nearly 188,000 people in the Barcelona metropolitan area, Catalonia, Spain. It operates under the EU Urban Waste Water Treatment Directive, discharging treated effluent into the Llobregat Rive
Sant Feliu de Codines wastewater treatment plant serves the municipality of Sant Feliu de Codines in Catalonia, Spain. It treats wastewater for a population of 4,215.
SANT CELONI wastewater treatment plant serves the municipality of Sant Celoni in Catalunya, Spain. It is an inland facility with a designed capacity of 1.00 volume unit, treating wastewater from approximately 14,921 people.
SANT CARLES DE LA RAPITA wastewater treatment plant serves la Ràpita, Catalunya, Spain. It is located near the Ebro Delta, a sensitive coastal wetland, and serves a population of 16,036.
Sant Antoni Vilamajor wastewater treatment plant serves the municipality of Sant Antoni de Vilamajor in Catalonia, Spain. It has a designed capacity of 1.00 cubic hectometer and serves a population of 6,177.
SANT ANDREU DE LLAVANERES wastewater treatment plant serves Sant Vicenç de Montalt in Catalunya, Spain. It is located near the Mediterranean coast and serves a population of approximately 25,000.
SALLENT ARTES wastewater treatment plant serves Sallent, Catalunya, Spain, treating wastewater for approximately 14,010 residents. The plant operates under Spain's implementation of the EU Urban Waste Water Treatment Directive.
Sabadell Riu Sec wastewater treatment plant serves approximately 146,000 people in Sabadell, Catalunya, Spain. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
UtilityRadar indexes 2117 wastewater treatment plants in Spain, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, SANTA MARIA DE PALAUTORDERA has the highest designed capacity at 1 m3/day.