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.
SIRUELA wastewater treatment plant serves the municipality of Siruela in Extremadura, Spain. It handles a population equivalent of 7,100 and operates under EU Urban Waste Water Treatment Directive standards.
San Vicente de Alcántara wastewater treatment plant serves Valencia de Alcántara, Extremadura, Spain, with a population of 14,500. The plant operates under EU Urban Waste Water Treatment Directive 91/271/EEC.
LOS SANTOS DE MAIMONA wastewater treatment plant serves the municipality of Los Santos de Maimona in Extremadura, Spain. It treats wastewater from approximately 13,700 residents.
Santa Amalia wastewater treatment plant serves the town of Santa Amalia in Extremadura, Spain. It treats wastewater from approximately 8,600 residents, supporting local water quality in the Guadiana River basin.
RIBERA DEL FRESNO wastewater treatment plant serves the town of Ribera del Fresno in Extremadura, Spain. It treats wastewater for approximately 6,000 residents under EU regulatory standards.
QUINTANA DE LA SERENA wastewater treatment plant serves the town of Quintana de la Serena in Extremadura, Spain. It treats wastewater from a population of approximately 11,700.
MONTIJO PUEBLA CALZADA wastewater treatment plant serves Puebla de la Calzada, Extremadura, Spain, with a population equivalent of 26,000. It operates under the EU Urban Waste Water Treatment Directive.
ORELLANA LA VIEJA wastewater treatment plant serves the town of Orellana la Vieja in Extremadura, Spain, with a population equivalent of 8,100. It operates under Spain's implementation of the EU Urban Waste Water Treatment Directive.
OLIVENZA wastewater treatment plant serves the municipality of Olivenza in Extremadura, Spain. It handles a population equivalent of 20,000 and discharges into the Guadiana River basin.
OLIVA DE LA FRONTERA wastewater treatment plant serves the town of Oliva de la Frontera in Extremadura, Spain. It treats wastewater from approximately 14,500 residents under EU regulatory standards.
NAVALVILLAR DE PELA wastewater treatment plant serves the town of Navalvillar de Pela in Extremadura, Spain. It treats wastewater from approximately 7,100 residents.
Monterrubio de la Serena wastewater treatment plant serves the town of Monterrubio de la Serena in Extremadura, Spain. It operates under EU regulations for small agglomerations.
MONESTERIO wastewater treatment plant serves the town of Monesterio in Extremadura, Spain. It treats wastewater for approximately 8,800 residents under the EU Urban Waste Water Treatment Directive.
MERIDA wastewater treatment plant serves Mérida, Extremadura, Spain, with a population of 85,000. It operates under the EU Urban Waste Water Treatment Directive, ensuring compliance with secondary treatment standards for medium-sized agglomerations.
MEDELLIN wastewater treatment plant serves Medellín, Extremadura, Spain, with a population of 7,800. It operates under EU Urban Waste Water Treatment Directive 91/271/EEC.
LLERENA wastewater treatment plant serves Llerena, Extremadura, Spain, with a population equivalent of 13,800. The plant operates under EU Urban Waste Water Treatment Directive 91/271/EEC, which mandates secondary treatment for agglomerations of this
JEREZ DE LOS CABALLEROS wastewater treatment plant serves the town of Jerez de los Caballeros in Extremadura, Spain. It treats wastewater for a population of approximately 22,100.
Fregenal de la Sierra wastewater treatment plant serves the town of Fregenal de la Sierra in Extremadura, Spain. It treats wastewater for approximately 11,200 residents.
FERIA wastewater treatment plant serves the town of Feria in Extremadura, Spain. It treats wastewater from approximately 5,800 residents under EU regulatory standards.
CORONADA LA wastewater treatment plant serves La Coronada, Extremadura, Spain, with a population of 5,800. It is an inland facility operating under EU regulations.
UtilityRadar indexes 2117 wastewater treatment plants in Spain, with treatment level, capacity, operator and discharge data on each record.