PRISSE Wastewater Treatment Plant, Prissé, Bourgogne-Franche-Comté, France

PRISSE is a wastewater treatment plant located in Prissé, a commune in the Saône-et-Loire department of Bourgogne-Franche-Comté, France. The plant serves a population of approximately 2,340 people and is part of the region's municipal wastewater infrastructure. It operates under the French regulatory framework, which implements the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant provides advanced treatment, which goes beyond the secondary treatment standard required by the EU directive for agglomerations of this size. Advanced treatment typically includes nutrient removal (nitrogen and phosphorus) to protect sensitive receiving waters. The plant has a designed capacity of 4,500 m³/day and currently discharges 417.45 m³/day, indicating significant spare capacity. The treated effluent is discharged into local watercourses that ultimately drain into the Saône River, a major tributary of the Rhône. The Rhône flows into the Mediterranean Sea. The plant's advanced treatment helps protect the ecological quality of these water bodies, which support diverse aquatic life and are important for regional biodiversity.

The plant discharges into the local watershed that feeds the Saône River, which flows south to join the Rhône near Lyon. The Rhône then empties into the Mediterranean Sea. The region's water bodies support diverse aquatic ecosystems, including fish species such as pike and perch, and are important for migratory birds. Advanced treatment at this plant helps reduce nutrient loads that could otherwise contribute to eutrophication in downstream waters.