BAJO EBRO Wastewater Treatment Plant, Fustiñana, Navarra, Spain

The BAJO EBRO wastewater treatment plant is located in Soto del Prior, Fustiñana, in the autonomous community of Navarra, Spain. It serves a population equivalent of 60,000, classifying it as a medium-to-large agglomeration under European Union regulations. The plant is situated inland, away from coastal areas, and its operations are integral to the region's water management infrastructure. As a facility serving over 10,000 people, BAJO EBRO is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment as a minimum standard. For agglomerations of this size, the directive also mandates more advanced treatment if the receiving waters are designated as sensitive areas. The plant's treatment processes are designed to meet these regulatory requirements, ensuring compliance with discharge standards. The treated effluent from BAJO EBRO is discharged into the Ebro River basin, which flows into the Mediterranean Sea via the Ebro Delta. The Ebro River is one of Spain's most significant watercourses, supporting diverse aquatic life and providing water for agriculture and urban use. The plant plays a crucial role in protecting the river's water quality and the ecological health of the downstream delta, a region of high ecological importance.

BAJO EBRO discharges into the Ebro River, 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, including migratory birds and fish species. The plant's operations help maintain water quality in the river, reducing nutrient loads that could otherwise contribute to eutrophication in the coastal zone.