Milagro Wastewater Treatment Plant, Navarra, Spain

The Milagro wastewater treatment plant is located in the town of Milagro, within the Navarra region of northern Spain. It serves a population equivalent of 26,900, classifying it as a medium-sized agglomeration under European Union standards. The plant is situated near the Ebro River, a major watercourse in the Iberian Peninsula. As a facility in Spain, the plant operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations of this size. The directive also mandates more advanced treatment if the discharge enters sensitive areas, which may apply to parts of the Ebro basin. The regulatory framework ensures compliance with national and European standards. The treated effluent from the Milagro plant is discharged into the Ebro River system, which flows eastward to the Mediterranean Sea. The Ebro basin supports diverse aquatic life and is an important agricultural and ecological corridor. Proper wastewater treatment at Milagro helps protect downstream water quality and the ecological health of the Ebro Delta, a region of high biodiversity.

The Milagro plant discharges into the Ebro River, which flows into the Mediterranean Sea via the Ebro Delta. The delta is an ecologically sensitive area that supports diverse aquatic life, including fish and bird species. The plant's treatment helps reduce nutrient and pollutant loads, contributing to the health of the river and its downstream ecosystems.