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.
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.
ARTAJONA wastewater treatment plant serves the town of Artajona in Navarre, Spain. It provides secondary treatment for a population of 1,697 and has a designed capacity of 3,400 m³/day.
AOIZ wastewater treatment plant in Aoiz/Agoitz, Navarra, Spain, serves a population of 5,417 with secondary treatment. The plant is currently closed and has a designed capacity of 7,083 m³/day.
DICASTILLO ALLO is a secondary wastewater treatment plant serving the town of Allo in Navarra, Spain. It treats wastewater from a population of 1,077 with a designed capacity of 7,283 m³/day.
ABLITAS wastewater treatment plant in Ablitas, Navarra, Spain, serves a population of 3,102 with secondary treatment. The plant is now closed, but its designed capacity was 3,500 m³/day.
MONTEAGUDO wastewater treatment plant in Monteagudo, Navarra, Spain, serves approximately 5,047 people with secondary treatment. It operates under EU Urban Waste Water Treatment Directive 91/271/EEC.
ARAIA wastewater treatment plant serves Albeiz, Asparrena in Euskadi, Spain. It provides secondary treatment for a population of 2,000 with a designed capacity of 3,700 m³/day.
LARRABETZU wastewater treatment plant serves the town of Larrabetzu in Euskadi, Spain, with advanced treatment for a population of 2,000. It discharges 663.36 m³/day of treated water.
LABASTIDA wastewater treatment plant serves Labastida / Bastida in Euskadi, Spain. It provides secondary treatment for a population of 11,334 with a designed capacity of 15,360 m³/day.
ALEGRIA DULANTZI is a secondary wastewater treatment plant serving Alegría-Dulantzi in Euskadi, Spain. It treats wastewater for approximately 2,500 residents with a designed capacity of 2,500 m³/day.
Santa Maria de Cayon wastewater treatment plant in Saron, Cantabria, Spain, serves 614 people with secondary treatment. It discharges 111.29 m³/day and has a designed capacity of 3,000 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.