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.
MONTESINOS is a closed secondary treatment plant in Los Montesinos, Comunitat Valenciana, Spain. It is located within 10 km of the coast, serving the Vega Baja region.
Monte Orgegia wastewater treatment plant serves Alicante, Spain, with a designed capacity of 1.00 and a population of 232,350. It is located near the Mediterranean coast, playing a key role in regional water management.
Moncofa wastewater treatment plant serves the municipality of Moncofa in the Comunitat Valenciana, Spain. It is located near the coast and has a designed capacity of 1.00 cubic meters per day.
MANCOMUNITAT DEL MARQUESAT is a wastewater treatment plant serving Catadau in the Comunitat Valenciana, Spain. It serves a population of 42,132 and has a designed capacity of 1.00 volume units.
MANCOMUNITAT DE LES VALLS wastewater treatment plant serves Faura in Comunitat Valenciana, Spain. It treats wastewater for approximately 17,864 people under EU regulatory standards.
LLIBER JALON wastewater treatment plant serves Llíber, Comunitat Valenciana, Spain. It is located near the coast and treats wastewater for approximately 5,931 people.
JACARILLA BIGASTRO wastewater treatment plant serves Jacarilla in Comunitat Valenciana, Spain, with a population equivalent of 13,106. The plant discharges into the Segura River basin, supporting local water quality.
IBI wastewater treatment plant serves the municipality of Ibi in Comunitat Valenciana, Spain. It is designed for a capacity of 1.00 and serves a population of approximately 36,403.
Guardamar del Segura wastewater treatment plant serves over 110,000 people in Comunitat Valenciana, Spain. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
GUADASSUAR wastewater treatment plant serves Guadassuar in Comunitat Valenciana, Spain, with a population equivalent of 7,678. It operates under EU Urban Waste Water Treatment Directive standards.
ALCUDIA BENIMODO wastewater treatment plant serves Benimodo in Comunitat Valenciana, Spain. It treats wastewater for approximately 58,757 people under EU regulatory standards.
ALCORA wastewater treatment plant serves l'Alcora in Comunitat Valenciana, Spain, with a designed capacity of 1.00 volume unit. It operates under EU Urban Waste Water Treatment Directive 91/271/EEC.
ALCOI wastewater treatment plant serves Cocentaina, Comunitat Valenciana, Spain. It handles a population equivalent of 215,778 under EU Urban Waste Water Treatment Directive standards.
ETAR Playa San Juan is a wastewater treatment plant serving 11,794 people in Guía de Isora, Canarias, Spain. Located on the coast of Tenerife, it plays a key role in protecting coastal waters.
ETAR de Los Gigantes is a wastewater treatment plant serving 12,400 people in Santiago del Teide, Tenerife, Canary Islands. It is located near the coast and operates under Spanish and EU wastewater regulations.
ETAR de Puerto de Santiago is a wastewater treatment plant serving Santiago del Teide in the Canary Islands, Spain. It treats wastewater from approximately 12,539 residents.
ETAR de Los Tarajales is a wastewater treatment plant serving Güímar, Tenerife, Canary Islands, Spain. It serves a population of 9,652 and is located near the coast.
ETAR de Ensenada Pelada is a wastewater treatment plant serving Granadilla de Abona, Tenerife, Canary Islands, Spain. It serves a population of 21,900 and has a designed capacity of 1.00 cubic meters per day.
ETAR de Radazul is a wastewater treatment plant in El Rosario, Canary Islands, Spain, serving approximately 9,593 people. It is located near the coast of Tenerife, within 50 km of the Atlantic Ocean.
EDAR del NorEste is a wastewater treatment plant in San Cristóbal de La Laguna, Canary Islands, Spain. It serves a population of approximately 39,212 and is located within 50 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, MONTE ORGEGIA has the highest designed capacity at 1 m3/day.