LUMPIAQUE Wastewater Treatment Plant, Rueda de Jalón, Aragón, Spain

LUMPIAQUE is a municipal wastewater treatment plant located in Rueda de Jalón, within the Valdejalón comarca of Zaragoza province, Aragón, Spain. The plant serves a population of approximately 2,410 residents, classifying it as a small agglomeration under the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant provides secondary treatment, which is the minimum required by the EU directive for freshwater discharges from agglomerations of this size. With a designed capacity of 2,933 m³/day and an actual discharge volume of 436.81 m³/day, the plant operates well below its capacity, indicating room for future growth or seasonal variations. The treated effluent is discharged into the local hydrological network, which ultimately drains into the Ebro River basin. The Ebro River is one of Spain's major rivers, flowing into the Mediterranean Sea via the Ebro Delta, a region of high ecological importance supporting diverse aquatic life and migratory bird populations.

The plant discharges into the Jalón River, a tributary of the Ebro River, which flows into the Mediterranean Sea. The Ebro Delta is an ecologically sensitive area that supports diverse aquatic life and serves as a critical migratory corridor for birds. Secondary treatment helps reduce organic pollution and protect downstream water quality.