ARNAY LE DUC Wastewater Treatment Plant, Arnay-le-Duc, Bourgogne-Franche-Comté

The ARNAY LE DUC wastewater treatment plant is located in Arnay-le-Duc, a commune in the Côte-d'Or department of Bourgogne-Franche-Comté, France. It serves a population of 3,366 and has a designed capacity of 3,500 m³/day, with an average discharge volume of 600.49 m³/day. The plant provides advanced treatment, ensuring high-quality effluent before discharge. As a French wastewater facility, it operates under the European Union's Urban Waste Water Treatment Directive (91/271/EEC), which requires appropriate treatment for agglomerations of this size. For small towns like Arnay-le-Duc, secondary treatment is the minimum standard, but this plant goes further with advanced treatment, likely to protect sensitive receiving waters. The plant's effluent is discharged into local watercourses that ultimately drain into the Seine basin. The region's rivers support diverse aquatic life and are important for agriculture and recreation. Advanced treatment helps minimize nutrient pollution and protects downstream ecosystems.

The plant discharges into local streams that flow into the Arroux River, a tributary of the Loire River, which eventually reaches the Atlantic Ocean. The watershed supports diverse freshwater habitats and is part of a region known for its agricultural landscapes. Advanced treatment reduces nutrient loads, helping to prevent eutrophication in downstream water bodies.