DIJON Wastewater Treatment Plant, Longvic, Bourgogne-Franche-Comté, France

The DIJON wastewater treatment plant is located in Longvic, near Dijon, in the Bourgogne-Franche-Comté region of eastern France. It serves a population of approximately 170,590 people, classifying it as a large agglomeration under EU regulations. The plant is part of the municipal wastewater infrastructure for the Dijon metropolitan area. As a large agglomeration, the plant is expected to meet the requirements of the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment as a minimum and tertiary treatment in sensitive areas. The plant's treatment processes and capacity are designed to comply with these standards, ensuring effective removal of pollutants before discharge. The treated effluent is discharged into local water bodies that ultimately drain into the Saône River, a major tributary of the Rhône. The Rhône flows into the Mediterranean Sea, making the plant's operations important for downstream water quality. The region's aquatic ecosystems benefit from the plant's treatment, which helps protect biodiversity in the Saône and Rhône basins.

The DIJON plant discharges into the local watershed, which feeds into the Ouche River and then the Saône River, a major tributary of the Rhône. The Rhône flows into the Mediterranean Sea, making the plant's effluent management critical for downstream water quality. The Saône and Rhône rivers support diverse aquatic life and are important for regional ecology, including migratory fish species. The plant's treatment helps reduce nutrient and pollutant loads, protecting these water bodies from eutrophication and contamination.