IBDES Y JARABA Wastewater Treatment Plant, Ibdes, Aragón, Spain

The IBDES Y JARABA wastewater treatment plant is located in Ibdes, a municipality in the province of Zaragoza, within the autonomous community of Aragón, Spain. The plant serves a population of approximately 3,585 people, classifying it as a small agglomeration under Spanish and EU regulations. The plant provides secondary treatment, which is the standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for freshwater discharges from agglomerations of this size. The designed capacity is 4,000 m³/day, with a reported discharge volume of 649.77 m³/day, indicating operational headroom. The treated effluent is discharged into the local watershed, which ultimately drains into the Ebro River basin. The Ebro River is one of Spain's major rivers, flowing into the Mediterranean Sea. The plant plays a key role in protecting local water quality and supporting the ecological health of the downstream environment.

The plant discharges into the Ebro River basin, which flows through northeastern Spain and empties into the Mediterranean Sea via the Ebro Delta. The delta is an ecologically sensitive area that supports diverse aquatic life and important migratory bird populations. Secondary treatment helps reduce organic pollutants and nutrients, mitigating eutrophication risks in the receiving waters.