2,117 plants indexed. Showing 1,594 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.
San Vicente de la Sonsierra wastewater treatment plant serves the town in La Rioja, Spain, with secondary treatment. It discharges treated water into the local environment, supporting the Ebro River basin.
BERCEO wastewater treatment plant in Estollo, La Rioja, Spain, serves a population of 902 with secondary treatment. It has a designed capacity of 2000 m³/day and discharges 403.29 m³/day.
SAN ASENSIO wastewater treatment plant serves the town of San Asensio in La Rioja, Spain. It provides secondary treatment and discharges treated water into the Ebro River basin.
RIBAFRECHA wastewater treatment plant serves Ribafrecha in La Rioja, Spain. It provides secondary treatment for a population of 1,117 and discharges 834.96 m³/day.
CERVERA DEL RIO ALHAMA is a secondary wastewater treatment plant in Cervera del Río Alhama, La Rioja, Spain, serving 2,044 people with a designed capacity of 5,000 m³/day.
BRIONES wastewater treatment plant in Briones, La Rioja, Spain, serves 1,667 people with secondary treatment. It discharges 690.01 m³/day and has a designed capacity of 6,125 m³/day.
BADARAN is a secondary wastewater treatment plant serving Badarán, La Rioja, Spain. It treats wastewater for a population of 1,261 with a designed capacity of 5,000 m³/day.
ARNEDILLO is a secondary wastewater treatment plant in Arnedillo, La Rioja, Spain, serving a population of 2,183. It discharges 229.05 m³/day of treated wastewater into the local watershed.
ALCANADRE wastewater treatment plant serves the town of Alcanadre in La Rioja, Spain. It provides secondary treatment for a population of 2,200, discharging treated water into the local watershed.
AGUILAR DEL RIO ALHAMA wastewater treatment plant serves Aguilar del Río Alhama, La Rioja, Spain. It provides secondary treatment for a population of 2,000 with a designed capacity of 2,100 m³/day.
VILLAFRANCA wastewater treatment plant in Villafranca, Navarra, Spain, serves a population of 3,942 with secondary treatment. It discharges 608 m³/day and has a designed capacity of 6,633 m³/day.
SESMA wastewater treatment plant serves the town of Sesma in Navarra, Spain, treating municipal wastewater for a population of 1,264. The facility operates with secondary treatment and discharges treated water into the Ebro River basin.
SANTACARA MELIDA is a secondary wastewater treatment plant in Mélida, Navarra, Spain, serving about 1,637 people. It discharges 494 m³/day and has a designed capacity of 3,650 m³/day.
The MENDAVIA wastewater treatment plant in Mendavia, Navarra, Spain, serves a population of 20,142 with secondary treatment. It has a designed capacity of 22,500 m³/day and discharges 622 m³/day of treated effluent.
Lumbier wastewater treatment plant serves 1,346 people in Navarra, Spain, with secondary treatment. It discharges 916 m³/day and has a designed capacity of 4,167 m³/day.
LERIN wastewater treatment plant serves the town of Lerín in Navarra, Spain, providing secondary treatment for a population of approximately 4,578. The plant discharges 343 cubic meters of treated wastewater daily.
FITERO wastewater treatment plant serves the town of Fitero in Navarra, Spain. It provides secondary treatment for a population of 3,587 and has a designed capacity of 3,633 m³/day.
CORTES wastewater treatment plant in Cortes, Navarra, Spain, serves approximately 6,001 people with secondary treatment and a designed capacity of 7,500 m³/day, discharging 536 m³/day.
CASTEJON wastewater treatment plant serves Valtierra, Navarra, Spain, treating wastewater for 6,500 people with secondary treatment.
CADREITA wastewater treatment plant serves Cadreita, Navarra, Spain, with secondary treatment for a population of 15,733. The plant has a designed capacity of 21,583 m³/day and discharges 835 m³/day.
UtilityRadar indexes 2117 wastewater treatment plants in Spain, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, MENDAVIA has the highest designed capacity at 22,500 m3/day.