ORCHAMPS VENNES Wastewater Treatment Plant, Orchamps-Vennes, France

ORCHAMPS VENNES is a wastewater treatment plant located in Orchamps-Vennes, a commune in the Doubs department of Bourgogne-Franche-Comté, France. The plant serves a population of approximately 5,200 people and operates under the regulatory framework of the European Union's Urban Waste Water Treatment Directive (91/271/EEC). The plant provides secondary treatment, which is the standard required by the EU directive for agglomerations of this size. With a designed capacity of 2,500 m³/day and an average daily discharge of 927.67 m³/day, the facility operates well within its capacity. The plant is situated inland, far from coastal areas, reducing direct marine impact. The treated effluent is discharged into the local watershed, which ultimately drains into the Doubs River, a tributary of the Saône, then the Rhône, and finally the Mediterranean Sea. The plant plays a key role in protecting the water quality of the Doubs River and downstream ecosystems, supporting aquatic life and regional water resources.

The plant discharges into the Doubs River basin, which flows into the Saône and Rhône rivers before reaching the Mediterranean Sea. This watershed supports diverse aquatic habitats and is important for regional biodiversity. The secondary treatment provided by the plant helps reduce organic pollutants and nutrients, mitigating eutrophication risks in downstream water bodies.