Wastewater plants in Spain

2,117 plants indexed. Showing 652 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.

Plant directory coverage

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.

Treatment levels

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.

Largest plant

The largest plant indexed for Spain is LA ALJORRA, with a designed capacity of 70,417 m³/day.

About our data

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.

652 plants matching filters

ZARZA LA MAYOR

Zarza la Mayor, Extremadura

ZARZA LA MAYOR wastewater treatment plant serves the town of Zarza la Mayor in Extremadura, Spain. It provides secondary treatment for a population of 3,200 and has a designed capacity of 2,600 m³/day.

Secondary 3,200 Low

ZARZA DE MONTANCHEZ

Zarza de Montánchez, Extremadura

Zarza de Montánchez wastewater treatment plant in Extremadura, Spain, serves 2,200 people with secondary treatment. It discharges 398.74 m³/day of treated effluent into local watercourses.

Secondary 2,200 Low

CILLEROS

Cilleros, Extremadura

CILLEROS wastewater treatment plant in Cilleros, Extremadura, Spain, serves 4,200 people with secondary treatment. It has a designed capacity of 3,700 m³/day and discharges 761.24 m³/day.

Secondary 4,200 Low

CECLAVIN

Ceclavín, Extremadura

Ceclavín wastewater treatment plant in Extremadura, Spain serves approximately 5,000 people with secondary treatment, discharging 906.24 m³/day into the local watershed.

Secondary 5,000 Low

HIGUERA DE VARGAS

Higuera de Vargas, Extremadura

Higuera de Vargas wastewater treatment plant serves 3,300 people in Extremadura, Spain. It provides secondary treatment and has a designed capacity of 3,360 m³/day.

Secondary 3,300 Low

L ALDEA

Deltebre, Catalunya

L Aldea wastewater treatment plant serves Deltebre, Catalunya, Spain, treating municipal wastewater for a population of 2,232. It operates with secondary treatment and has a designed capacity of 6,400 m³/day.

Secondary 2,232 Low

PIORNAL

Piornal, Extremadura

Piornal wastewater treatment plant serves the town of Piornal in Extremadura, Spain, providing secondary treatment for a population of 2,500. The plant has a designed capacity of 2,544 m³/day and discharges 453.12 m³/day.

Secondary 2,500 Low

PINOFRANQUEADO

Pinofranqueado, Extremadura

Pinofranqueado wastewater treatment plant serves 3,100 people in Extremadura, Spain. It operates with secondary treatment and has a designed capacity of 5,000 m³/day.

Secondary 3,100 Low

LA PESGA

La Pesga, Extremadura

LA PESGA wastewater treatment plant serves the town of La Pesga in Extremadura, Spain. It provides secondary treatment for a population of 3,200, discharging 579.99 cubic meters of treated wastewater daily.

Secondary 3,200 Low

PERALES DEL PUERTO

Perales del Puerto, Extremadura

Perales del Puerto wastewater treatment plant serves the town of Perales del Puerto in Extremadura, Spain. It provides secondary treatment for a population of 2,400.

Secondary 2,400 Low

ARROYO DE SAN SERVAN

Arroyo de San Serván, Extremadura

ARROYO DE SAN SERVAN wastewater treatment plant serves Arroyo de San Serván, Extremadura, Spain. It provides secondary treatment for a population of 4,200 with a designed capacity of 8,000 m³/day.

Secondary 4,200 Low

ALCONCHEL

Alconchel, Extremadura

Alconchel wastewater treatment plant serves the town of Alconchel in Extremadura, Spain, providing secondary treatment for a population of approximately 2,462.

Secondary 2,462 Low

LA ALBUERA

La Albuera, Extremadura

La Albuera wastewater treatment plant in Extremadura, Spain serves 2,200 people with secondary treatment. It discharges 398.74 m³/day and has a designed capacity of 4,000 m³/day.

Secondary 2,200 Low

ALANGE

La Zarza, Extremadura

ALANGE wastewater treatment plant in La Zarza, Extremadura, Spain, serves 4,300 people with secondary treatment. It discharges 779.36 m³/day and has a designed capacity of 6,000 m³/day.

Secondary 4,300 Low

AHILLONES

Ahillones, Extremadura

AHILLONES wastewater treatment plant serves Ahillones, Extremadura, Spain, with secondary treatment for a population of 2,200. It has a designed capacity of 4,000 m³/day and discharges 398.74 m³/day.

Secondary 2,200 Low

NUNOMORAL

Nuñomoral, Extremadura

NUNOMORAL wastewater treatment plant serves the municipality of Nuñomoral in Extremadura, Spain. It provides secondary treatment for a population of 3,400 with a designed capacity of 5,000 m³/day.

Secondary 3,400 Low

NAVAS DEL MADRONO

Navas del Madroño, Extremadura

NAVAS DEL MADRONO wastewater treatment plant serves the town of Navas del Madroño in Extremadura, Spain. It provides secondary treatment for a population of 2,800 and has a designed capacity of 2,796 m³/day.

Secondary 2,800 Low

NAVACONCEJO

Navaconcejo, Extremadura

NAVACONCEJO wastewater treatment plant serves the town of Navaconcejo in Extremadura, Spain. It provides secondary treatment for a population of 3,500 with a designed capacity of 3,500 m³/day.

Secondary 3,500 Low

MONROY

Monroy, Extremadura

MONROY wastewater treatment plant in Monroy, Extremadura, Spain, serves 2,200 people with secondary treatment. It discharges 398.74 cubic meters per day and has a designed capacity of 3,200 cubic meters per day.

Secondary 2,200 Low

MOHEDAS DE GRANADILLA

Mohedas de Granadilla, Extremadura

Mohedas de Granadilla wastewater treatment plant serves the town of Mohedas de Granadilla in Extremadura, Spain. It provides secondary treatment for a population of 3,100.

Secondary 3,100 Low

Frequently asked

How many wastewater treatment plants are in Spain?

UtilityRadar indexes 2117 wastewater treatment plants in Spain, with treatment level, capacity, operator and discharge data on each record.

What is the largest wastewater treatment plant in Spain?

Among the indexed plants, ARROYO DE SAN SERVAN has the highest designed capacity at 8,000 m3/day.

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