Overview
SOS DEL REY CATOLICO is a secondary wastewater treatment plant serving 1,026 people in Sos del Rey Católico, Aragón, Spain. It discharges treated effluent into the local watershed under EU regulatory standards.
SOS DEL REY CATOLICO is a municipal wastewater treatment plant located in Sos del Rey Católico, a town in the Cinco Villas region of Zaragoza, Aragón, Spain. The plant serves a population of 1,026, classifying it as a small agglomeration under EU guidelines. The plant provides secondary treatment, which is the standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for discharges into freshwater bodies from agglomerations of this size. The designed capacity is 2,917 m³/day, with a current discharge volume of 185.96 m³/day, indicating ample reserve capacity. The treated effluent is discharged into the local river system, which ultimately drains into the Ebro River basin. The Ebro River flows into the Mediterranean Sea, supporting diverse aquatic life and agricultural water use in the region. The plant plays a key role in protecting local water quality and downstream ecosystems.
Environmental context
The plant discharges into the Ebro River basin, which flows through northeastern Spain before reaching the Mediterranean Sea. The Ebro Delta is an ecologically sensitive area that supports diverse bird species and aquatic habitats. Secondary treatment helps reduce organic pollutants and nutrients, mitigating eutrophication risks in downstream waters.
Frequently asked questions
The plant is located on Carretera de Gallur a Sangüesa in Sos del Rey Católico, Cinco Villas, Zaragoza, Aragón, Spain.
The plant serves a population of 1,026 people, classifying it as a small agglomeration under EU wastewater directives.
The plant provides secondary treatment, which is the standard required by the EU Urban Waste Water Treatment Directive for discharges into freshwater from agglomerations of this size.
The plant has a designed capacity of 2,917 m³/day, with a current discharge volume of 185.96 m³/day, indicating significant reserve capacity.
The plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), transposed into Spanish law. For small agglomerations like this, secondary treatment is mandatory for freshwater discharges.
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