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.
BORGES BLANQUESLES wastewater treatment plant serves les Borges Blanques in Catalunya, Spain, with a population of 5,553. The plant operates under EU Urban Waste Water Treatment Directive 91/271/EEC, which mandates secondary treatment for agglomerati
BLANES wastewater treatment plant serves the coastal town of Blanes in Catalunya, Spain, with a population equivalent of 50,639. The facility operates under Spain's implementation of the EU Urban Waste Water Treatment Directive.
BALAGUER wastewater treatment plant serves the city of Balaguer in Catalunya, Spain, with a population equivalent of 16,423. It operates under the EU Urban Waste Water Treatment Directive.
BAGA_GUARDIOLA DE BERGUEDA is a wastewater treatment plant serving Guardiola de Berguedà, Catalunya, Spain. It serves a population of approximately 3,767 and discharges into the Llobregat River basin.
ARENYS DE MAR wastewater treatment plant serves Arenys de Mar, Catalunya, Spain, with a population equivalent of 43,235. It is located near the Mediterranean coast and operates under EU Urban Waste Water Treatment Directive standards.
ARBUCIES wastewater treatment plant serves the town of Arbúcies in Catalunya, Spain. It has a designed capacity of 1.00 and serves a population of 4,320.
ANGLES wastewater treatment plant serves Bescanó, Girona, in Catalunya, Spain. It treats wastewater from a population of 8,007 and discharges into the local watershed.
AMPOSTA wastewater treatment plant serves the town of Amposta in Catalunya, Spain, with a designed capacity of 1.00 and a population equivalent of 16,470. It operates under the EU Urban Waste Water Treatment Directive.
ALTAFULLA wastewater treatment plant serves Tarragona, Spain, with a designed capacity of 1.00 and a population of 23,340. It operates under EU regulations for medium agglomerations.
ALFARRAS ALMENAR wastewater treatment plant serves Andaní, Alfarràs, in Catalunya, Spain, treating wastewater for approximately 5,485 people. The plant discharges into local water bodies within the Ebro basin.
ALCARRAS wastewater treatment plant serves Torres de Segre, Catalunya, Spain, with a population of 8,853. It operates under EU Urban Waste Water Treatment Directive 91/271/EEC, which mandates secondary treatment for agglomerations of this scale.
AITONA SEROS wastewater treatment plant serves the town of Seròs in Catalunya, Spain. It treats wastewater from a population of approximately 3,329 under the EU Urban Waste Water Treatment Directive.
AIGUAFREDA wastewater treatment plant serves Tagamanent in Catalunya, Spain, with a designed capacity of 1.00 cubic meters. It operates under the EU Urban Waste Water Treatment Directive, ensuring environmental protection for local water bodies.
AGRAMUNT wastewater treatment plant serves the town of Agramunt in Catalunya, Spain. It treats wastewater from a population of approximately 8,971 people.
ABRERA wastewater treatment plant serves Abrera, Catalunya, Spain, with a designed capacity of 1.00 and a population served of 62,638. It operates under EU Urban Waste Water Treatment Directive 91/271/EEC.
PALS wastewater treatment plant serves the town of Pals in Catalunya, Spain. It has a designed capacity of 1.00 and serves a population of 4233.
PALAMOS wastewater treatment plant serves Mont-ras in Catalunya, Spain, with a population equivalent of 61,551. The facility is located within 50 km of the coast and discharges into the Mediterranean basin.
OLOT wastewater treatment plant serves Olot, Catalunya, Spain, with a population equivalent of 67,527. It operates under the EU Urban Waste Water Treatment Directive, ensuring compliance with secondary treatment standards for medium-sized agglomerati
NAVAS wastewater treatment plant serves Balsareny in Catalunya, Spain. It treats wastewater from approximately 3,901 people under the EU Urban Waste Water Treatment Directive.
NAUT ARAN wastewater treatment plant serves Arties in Naut Aran, Val d'Aran, Catalunya, Spain. It treats wastewater from a population of 1,749 under EU regulations.
UtilityRadar indexes 2117 wastewater treatment plants in Spain, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, BLANES has the highest designed capacity at 1 m3/day.