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.
Sant Hilari Sacalm wastewater treatment plant serves the town of Sant Hilari Sacalm in Catalunya, Spain. It has a designed capacity of 1.00 and serves a population of approximately 4,909.
SANT FRUITOS NAVARCLES SANT PEDOR is a wastewater treatment plant serving Sant Fruitós de Bages, Catalunya, Spain. It treats wastewater for approximately 17,643 people.
Sant Feliu de Llobregat wastewater treatment plant serves nearly 188,000 people in the Barcelona metropolitan area, Catalonia, Spain. It operates under the EU Urban Waste Water Treatment Directive, discharging treated effluent into the Llobregat Rive
Sant Feliu de Codines wastewater treatment plant serves the municipality of Sant Feliu de Codines in Catalonia, Spain. It treats wastewater for a population of 4,215.
SANT CELONI wastewater treatment plant serves the municipality of Sant Celoni in Catalunya, Spain. It is an inland facility with a designed capacity of 1.00 volume unit, treating wastewater from approximately 14,921 people.
SANT CARLES DE LA RAPITA wastewater treatment plant serves la Ràpita, Catalunya, Spain. It is located near the Ebro Delta, a sensitive coastal wetland, and serves a population of 16,036.
Sant Antoni Vilamajor wastewater treatment plant serves the municipality of Sant Antoni de Vilamajor in Catalonia, Spain. It has a designed capacity of 1.00 cubic hectometer and serves a population of 6,177.
SANT ANDREU DE LLAVANERES wastewater treatment plant serves Sant Vicenç de Montalt in Catalunya, Spain. It is located near the Mediterranean coast and serves a population of approximately 25,000.
SALLENT ARTES wastewater treatment plant serves Sallent, Catalunya, Spain, treating wastewater for approximately 14,010 residents. The plant operates under Spain's implementation of the EU Urban Waste Water Treatment Directive.
Sabadell Riu Sec wastewater treatment plant serves approximately 146,000 people in Sabadell, Catalunya, Spain. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
SABADELL_RIU RIPOLL is a municipal wastewater treatment plant serving Sabadell, Catalunya, Spain. It treats wastewater for approximately 77,927 people and discharges into the Ripoll River.
RUBI wastewater treatment plant serves Castellbisbal in Catalunya, Spain, with a population equivalent of 84,226. The facility operates under EU Urban Waste Water Treatment Directive 91/271/EEC, which mandates secondary treatment for agglomerations o
ROSES wastewater treatment plant serves the coastal town of Roses in Catalunya, Spain. It operates under the EU Urban Waste Water Treatment Directive, which mandates secondary treatment for agglomerations of this scale.
RODA DE TER wastewater treatment plant serves Roda de Ter, Catalunya, Spain, treating wastewater for approximately 3,167 residents. The plant discharges into the local water system within the Ter River basin.
ROCA DEL VALLES LA wastewater treatment plant serves la Roca del Vallès in Catalonia, Spain. It treats wastewater from a population of approximately 26,898 under EU regulatory standards.
RIU DE BITLLES wastewater treatment plant serves Torrelavit, a municipality in the Alt Penedès region of Catalonia, Spain. It operates under the EU Urban Waste Water Treatment Directive, serving a population of 3,714.
Ripoll wastewater treatment plant serves the town of Ripoll in Catalunya, Spain, with a population of approximately 17,000. It operates under the EU Urban Waste Water Treatment Directive.
RIBES DE FRESER wastewater treatment plant serves the municipality of Ribes de Freser in Catalunya, Spain. It treats wastewater from a population of approximately 2,639 people.
REUS wastewater treatment plant serves Reus, Catalunya, Spain, with a designed capacity of 1.00 and a population served of 98,269. The facility operates under EU Urban Waste Water Treatment Directive 91/271/EEC.
Puigcerdà wastewater treatment plant serves approximately 15,690 people in the Cerdanya region of Catalonia, Spain. The facility operates under EU Urban Waste Water Treatment Directive standards for medium-sized agglomerations.
UtilityRadar indexes 2117 wastewater treatment plants in Spain, with treatment level, capacity, operator and discharge data on each record.
Among the indexed plants, SANT HILARI SACALM has the highest designed capacity at 1 m3/day.