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.
EDAR LA FRANCA is an advanced wastewater treatment plant in Ribadedeva, Asturias, Spain, serving 2,700 people. It discharges treated water near the coast of the Cantabrian Sea.
BECERREA wastewater treatment plant in Becerreá, Galicia, Spain, serves a population of 2,691 with advanced treatment. The plant is currently closed.
LODEIRO CABANA DE BERGANTINOS is an advanced wastewater treatment plant serving 2,321 people in A Carballa, Galicia, Spain. It discharges 457.60 m³/day of treated effluent near the Atlantic coast.
Barrañán Arteixo is an advanced wastewater treatment plant in Arteixo, Galicia, Spain. It serves a population of 2,142 and discharges treated water near the Atlantic coast.
ILLA DA TOXA EDAR INDUSTRIAL is an advanced wastewater treatment plant in A Toxa, Galicia, Spain. It serves a population of 1,110 and has a designed capacity of 4,000 m³/day.
Viana do Bolo wastewater treatment plant in Galicia, Spain, serves 1,566 people with secondary treatment. The plant is currently closed, with a designed capacity of 2,500 m³/day.
POBRA DE TRIVES wastewater treatment plant serves A Pobra de Trives in Galicia, Spain, with advanced treatment for a population of 3,137. It discharges 556.23 m³/day and has a designed capacity of 2,500 m³/day.
MACEDA wastewater treatment plant in Maceda, Galicia, Spain, serves 2,860 people with advanced treatment and a designed capacity of 3,500 m³/day, discharging 622.18 m³/day.
Baños de Molgas wastewater treatment plant in Galicia, Spain, serves 822 people with advanced treatment. The plant is now closed, having discharged treated effluent into the local watershed.
BARREIROS wastewater treatment plant in Os Feás de Moreda, Galicia, Spain, serves a population of 1,806 with advanced treatment. The plant is closed but discharged 327.33 m³/day with a designed capacity of 4,000 m³/day.
LAXE wastewater treatment plant in Laxe, Galicia, Spain, serves a population of 3,423 with advanced treatment. It discharges 765.22 m³/day and has a designed capacity of 3,000 m³/day.
DODRO wastewater treatment plant in O Sar, Galicia, Spain, serves 1,330 people with advanced treatment. Though currently closed, it was designed for 4,500 m³/day capacity and discharges 241.06 m³/day.
PONTECESURES wastewater treatment plant in Infesta, Galicia, Spain, serves 3,370 people with advanced treatment. It discharges 798.75 m³/day and is located within 10 km of the coast.
MORANA wastewater treatment plant in Santa Lucía de Moraña, Galicia, Spain, serves 1,781 people with advanced treatment. The plant is now closed.
CORME PONTECESO is an advanced wastewater treatment plant in Ponteceso, Galicia, Spain. It serves a population of 1,686 and has a designed capacity of 3,000 m³/day, though it is currently closed.
OUTES is an advanced wastewater treatment plant in A Serra de Outes, Galicia, Spain, serving about 5,300 people. It discharges treated water into the local river system near the Atlantic coast.
ORTIGUEIRA wastewater treatment plant in Ortigueira, Galicia, Spain, serves 3,107 people with advanced treatment. It discharges 859.33 m³/day and has a designed capacity of 6,000 m³/day.
NEDA wastewater treatment plant in Neda, Galicia, Spain, serves a population of 4,163 with advanced treatment.
Esteiro Muros is an advanced wastewater treatment plant in Muros, Galicia, Spain, serving a population of 3,668. It discharges 846.78 m³/day of treated effluent near the coast.
MUXIA wastewater treatment plant in Muxía, Galicia, Spain, serves 2,528 people with advanced treatment. It discharges 740.55 m³/day and is located within 10 km of the coast.
UtilityRadar indexes 2117 wastewater treatment plants in Spain, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, MORANA has the highest designed capacity at 6,225 m3/day.