2,117 plants indexed.
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.
RIO ASON is an advanced wastewater treatment plant in Rasines, Cantabria, Spain. It discharges 811.82 m³/day and is located within 10 km of the coast, serving the local community.
Villacarriedo wastewater treatment plant in Cantabria, Spain, provides secondary treatment. It serves the local community with a designed capacity of 850 m³/day and discharges 183.85 m³/day.
LA CAVADA is a secondary wastewater treatment plant in Riotuerto, Cantabria, Spain. It discharges 268.57 m³/day of treated effluent and is located within 10 km of the coast.
ATALERREKA wastewater treatment plant serves Basaburua, Navarra, Spain, with a designed capacity of 1.00. It operates under EU regulations for small agglomerations.
Bourg madame Puigcerda is a wastewater treatment plant serving Puigcerdà, Catalunya, Spain. It treats wastewater for approximately 6,300 people in the Cerdanya region.
Los Gallardos wastewater treatment plant in Andalucía, Spain, is currently closed. It served a population of 5,555 and had a designed capacity of 1.00 (units unspecified).
CEUTA wastewater treatment plant serves the city of Ceuta, Spain, with a population equivalent of 114,595. The plant is located near the Mediterranean coast and operates under EU regulations.
ALMUNECAR wastewater treatment plant serves Almuñécar, Andalucía, Spain, treating wastewater for approximately 124,700 people. The facility is located near the Mediterranean coast and operates under EU regulatory standards.
ALJARAFE III B is a wastewater treatment plant in Villamanrique de la Condesa, Andalucía, Spain, serving approximately 22,667 people. It operates under the EU Urban Waste Water Treatment Directive.
ALJARAFE GUADIAMAR AZNA is a wastewater treatment plant serving Aznalcázar, Andalucía, Spain. It serves a population of approximately 23,711 and operates under the EU Urban Waste Water Treatment Directive.
ALHAMA DE ALMERIA wastewater treatment plant serves Alhabia, Almería, Andalucía, Spain. It has a designed capacity of 1.00 and serves a population of 13,581.
Algodonales wastewater treatment plant serves the town of Algodonales in Andalucía, Spain. It treats wastewater for approximately 7,700 residents under EU regulatory standards.
ALCALA DE XIVERT ALCOSSEBRE is a wastewater treatment plant serving Alcalà de Xivert, Spain. It treats wastewater for a population of 22,335 in the Comunitat Valenciana region.
BENEJUZAR wastewater treatment plant in Biel, Aragón, Spain, is a closed facility with secondary treatment and a designed capacity of 17,500 m³/day.
VILLARGORDO DEL CABRIEL wastewater treatment plant in Villargordo del Cabriel, Comunitat Valenciana, Spain, is currently closed. It was designed with a capacity of 1,666 m³/day and provided secondary treatment.
VENTA DEL MORO wastewater treatment plant in Venta del Moro, Comunitat Valenciana, Spain, is a closed secondary treatment facility with a designed capacity of 1,625 m³/day.
SUECA EL MARENY DE BARRAQUETES is a closed advanced treatment plant in Sueca, Comunitat Valenciana, Spain. It was designed for a capacity of 30,083 m³/day and is located within 10 km of the coast.
SINARCAS wastewater treatment plant in Sinarcas, Comunitat Valenciana, Spain, is a closed secondary treatment facility with a designed capacity of 1408 m³/day.
GAVARDA is a closed secondary treatment plant in Alberic, Comunitat Valenciana, Spain. It was designed with a capacity of 739 m³/day and served the local urban area.
CANET D EN BERENGUER is a closed secondary treatment plant near Sagunt, Valencia, Spain. It served the Almardà area with a designed capacity of 12,415 m³/day and is within 10 km of the Mediterranean coast.
UtilityRadar indexes 2117 wastewater treatment plants in Spain, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, SUECA EL MARENY DE BARRAQUETES has the highest designed capacity at 30,083 m3/day.