Pouilly-en-Auxois Wastewater Treatment Plant | Bourgogne-Franche-Comté, France

The Pouilly-en-Auxois wastewater treatment plant is located in the commune of Pouilly-en-Auxois, within the Côte-d'Or department of Bourgogne-Franche-Comté, France. The plant serves a population of 5460 and is part of the municipal wastewater infrastructure for this rural commune. It operates under the regulatory framework of the EU Urban Waste Water Treatment Directive (91/271/EEC), which sets standards for treatment levels based on population size and receiving water sensitivity. The plant provides secondary treatment, which is the minimum required under the EU directive for agglomerations of this scale. With a designed capacity of 2265.00 m³/day and an average discharge volume of 974.05 m³/day, the facility operates well within its capacity. The treatment process ensures that effluent meets regulatory standards before discharge into the local environment. The treated wastewater is discharged into the local watershed, which ultimately drains into the Seine River basin via the Canal de Bourgogne and the Yonne River. This region is part of the larger Seine-Normandy hydrographic system, which supports diverse aquatic life and provides water for agriculture and human consumption. The plant's operation helps protect downstream water quality and ecological health.

The plant discharges into the local watershed that feeds the Canal de Bourgogne, a waterway connecting the Yonne and Saône rivers. This water eventually flows into the Seine River basin, which drains into the English Channel. The receiving waters support a variety of fish species and are important for regional biodiversity. The secondary treatment provided by the plant helps reduce nutrient and organic pollution, protecting downstream ecosystems from eutrophication and other impacts.