2,117 plants indexed. Showing 1,147 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.
MEDINA SIDONIA wastewater treatment plant serves Medina Sidonia, Andalucía, Spain, with a designed capacity of 1.00 and a population served of 15,680.
MAZAGON wastewater treatment plant serves a population of 7,060 in Spain. Located near the coast, it operates under EU regulations for small agglomerations.
MATALASCANAS wastewater treatment plant serves Almonte, Andalucía, Spain, with a population equivalent of 25,774. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
MARMOLEJO wastewater treatment plant serves Marmolejo, Andalucía, Spain, with a population of 12,458. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this size.
MARCHENA wastewater treatment plant serves the town of Marchena in Andalucía, Spain, with a population equivalent of 27,500. It operates under Spain's implementation of the EU Urban Waste Water Treatment Directive.
Manilva wastewater treatment plant serves 28,100 people in Spain. Located near the coast, it operates under the EU Urban Waste Water Treatment Directive.
MANCHA REAL NUEVA wastewater treatment plant serves Mancha Real, Andalucía, Spain, with a population of approximately 13,902. It operates under EU Urban Waste Water Treatment Directive standards.
The MACAEL wastewater treatment plant serves Cantoria in Andalucía, Spain, with a population equivalent of 20,897. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
Lucena wastewater treatment plant serves the city of Lucena in Andalusia, Spain. It treats wastewater from a population of approximately 14,000 under the EU Urban Waste Water Treatment Directive.
Los Villares wastewater treatment plant serves the municipality of Los Villares in Andalucía, Spain. It treats wastewater from a population of approximately 11,036 under the EU Urban Waste Water Treatment Directive.
LOS VADOS EDAR OESTE is a wastewater treatment plant serving Granada, Spain. It handles a population equivalent of 161,585 and operates under EU Urban Waste Water Treatment Directive standards.
LOS PALACIOS VILLAFRANCA wastewater treatment plant serves Los Palacios y Villafranca, Andalucía, Spain. It treats wastewater from approximately 43,000 people as part of the region's municipal infrastructure.
Los Barrios wastewater treatment plant serves the municipality of Los Barrios in Andalucía, Spain, with a population of approximately 18,083. The plant is located within 50 km of the coast and operates under EU regulations.
LOS ALCORES wastewater treatment plant serves Mairena del Alcor, Andalucía, Spain, with a population of 47,800. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for this scale.
LOJA wastewater treatment plant serves the municipality of Loja in Andalucía, Spain, with a population equivalent of 24,573. The plant operates under Spain's implementation of the EU Urban Waste Water Treatment Directive.
LINARES wastewater treatment plant serves Linares, Andalucía, Spain, with a population equivalent of 95,900. The plant operates under the EU Urban Waste Water Treatment Directive, ensuring compliance with secondary treatment standards for large agglo
LEBRIJA wastewater treatment plant serves Lebrija in Andalucía, Spain, with a population equivalent of 34,953. The facility has a designed capacity of 1.00 (unit unspecified) and operates under the EU Urban Waste Water Treatment Directive.
LAS GALERAS wastewater treatment plant serves El Puerto de Santa María in Andalucía, Spain. It is located near the Bay of Cádiz and serves a population of approximately 128,209.
LANTEJUELA wastewater treatment plant serves La Lantejuela in Andalucía, Spain, with a population equivalent of 6,063. The plant operates under Spain's implementation of the EU Urban Waste Water Treatment Directive.
LA RANILLA wastewater treatment plant serves Alcalá de Guadaíra, Spain, with a population equivalent of 298,609. The facility operates under Spain's implementation of the EU Urban Waste Water Treatment Directive.
UtilityRadar indexes 2117 wastewater treatment plants in Spain, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, MEDINA SIDONIA has the highest designed capacity at 1 m3/day.