Espinosa de los Monteros Wastewater Treatment Plant | Burgos, Castilla y León

The Espinosa de los Monteros wastewater treatment plant is located in the municipality of Espinosa de los Monteros, in the province of Burgos, Castilla y León, Spain. The plant serves a population of approximately 10,700 residents, classifying it as a medium-sized agglomeration under Spanish and EU regulations. The plant provides advanced treatment, which goes beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Advanced treatment typically includes nutrient removal (nitrogen and phosphorus) to protect sensitive receiving waters. The plant has a designed capacity of 10,700 cubic meters per day and currently discharges 798.63 cubic meters daily, indicating it operates well below its capacity. The treated effluent is discharged into a local watercourse that eventually drains into the Ebro River basin, which flows into the Mediterranean Sea. The plant's advanced treatment helps protect the ecological health of the downstream river system and the Mediterranean coastal environment.

The plant discharges into a tributary of the Ebro River, one of Spain's major rivers, which flows into the Mediterranean Sea via the Ebro Delta. The delta is an ecologically sensitive area that supports diverse aquatic life and migratory birds. Advanced treatment at this plant reduces nutrient loading, helping to prevent eutrophication in downstream waters.