Phaffans Bessoncourt Wastewater Treatment Plant, Phaffans, Bourgogne-Franche-Comté

Phaffans Bessoncourt is an advanced wastewater treatment plant located in Phaffans, within the Territoire-de-Belfort department of Bourgogne-Franche-Comté, France. The facility serves a population of approximately 1,406 residents and is designed to handle a capacity of 3,200 cubic meters per day, with an average discharge volume of 250.83 cubic meters per day. As an advanced treatment plant, it goes beyond secondary treatment to remove nutrients and other pollutants, meeting stringent French and EU standards. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), plants serving agglomerations of this size are required to provide secondary treatment, but the advanced level here indicates a higher commitment to water quality, likely due to the sensitivity of the receiving environment. The plant discharges treated wastewater into local watercourses that drain into the Rhine basin, ultimately reaching the North Sea. Its advanced treatment helps protect downstream ecosystems, including the Rhine River and its tributaries, which support diverse aquatic life and are important for regional biodiversity.

The plant discharges into local streams that are part of the Rhine River basin, which flows through France, Germany, and the Netherlands before reaching the North Sea. The advanced treatment level helps protect the sensitive aquatic ecosystems of the Rhine basin, including habitats for fish and migratory species. The region's temperate climate and mixed urban-agricultural landscape make nutrient removal critical to prevent eutrophication in downstream waters.