Château Chinon Ville Wastewater Treatment Plant, Château-Chinon, France

Château Chinon Ville is a municipal wastewater treatment plant located in Château-Chinon (Campagne), within the Nièvre department of Bourgogne-Franche-Comté, France. The plant serves a population of around 1,500, classifying it as a small agglomeration under French and EU regulations. As a secondary treatment facility, the plant provides biological treatment to reduce organic matter and suspended solids. Its designed capacity is 3,800 cubic meters per day, with an average daily discharge volume of 267.6 cubic meters. The plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size discharging into freshwater. The treated effluent is released into the local watercourse, which flows through the Yonne River basin and ultimately drains into the Seine River and the English Channel. The plant plays a key role in protecting the region's water quality and supporting downstream aquatic ecosystems.

The plant discharges into a tributary of the Yonne River, part of the Seine basin that flows northward to the English Channel. This watershed supports diverse freshwater habitats and is important for migratory fish species. The region's rural and forested landscape contributes to natural water filtration, but the plant's secondary treatment helps mitigate nutrient loading and organic pollution in the receiving waters.