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.
ONTINYENT AGULLENT wastewater treatment plant serves Ontinyent in Comunitat Valenciana, Spain. It treats wastewater from approximately 102,705 people under the EU Urban Waste Water Treatment Directive.
ONDA BETXI VILA REAL ALQUERIAS is a wastewater treatment plant serving Vila-real, Spain. It handles a population equivalent of 112,265 and is located within 50 km of the coast in the Comunitat Valenciana region.
OLIVA wastewater treatment plant serves Oliva, Comunitat Valenciana, Spain, with a population equivalent of 24,181. It is located near the coast and discharges into the Mediterranean Sea.
NULES VILLAVIEJA wastewater treatment plant serves Nules, Comunitat Valenciana, Spain. It treats wastewater from approximately 26,180 people and is located near the Mediterranean coast.
NOVELDA MONFORTE DEL CID wastewater treatment plant serves Monforte del Cid, Spain, with a designed capacity of 1.00. It operates under EU Urban Waste Water Treatment Directive 91/271/EEC for agglomerations of this scale.
VINAROS wastewater treatment plant serves a population of 55,131 in Spain. Located near the Mediterranean coast, it operates under EU Urban Waste Water Treatment Directive requirements for medium-sized agglomerations.
VILLENA wastewater treatment plant serves Villena in Comunitat Valenciana, Spain, with a population equivalent of 77,225. The facility operates under the EU Urban Waste Water Treatment Directive.
VILA REAL wastewater treatment plant serves Vila-real in Comunitat Valenciana, Spain. It treats wastewater for approximately 35,123 people and is located near the Mediterranean coast.
VILA JOIOSA wastewater treatment plant serves la Vila Joiosa in Comunitat Valenciana, Spain, with a population equivalent of 97,508. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations
NAQUERA SERRA wastewater treatment plant serves Nàquera in Comunitat Valenciana, Spain. It treats wastewater for approximately 7,000 residents and is located within 50 km of the Mediterranean coast.
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.
UtilityRadar indexes 2117 wastewater treatment plants in Spain, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, ONDA BETXI VILA REAL ALQUERIAS has the highest designed capacity at 1 m3/day.