ST LAURENT DE CHAMOUSSET Wastewater Treatment Plant, Auvergne-Rhône-Alpes

ST LAURENT DE CHAMOUSSET is a wastewater treatment plant located in Saint-Laurent-de-Chamousset, a commune in the Rhône department of the Auvergne-Rhône-Alpes region, France. The plant serves a population of 1,326 and has a designed capacity of 3,200 m³/day, with an average discharge volume of 236.56 m³/day. The plant employs advanced treatment processes, exceeding the secondary treatment standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Advanced treatment typically includes nutrient removal (nitrogen and phosphorus) to protect sensitive receiving waters. The treated effluent is discharged into the local watershed, which ultimately drains into the Rhône River basin. The Rhône River flows into the Mediterranean Sea, supporting diverse aquatic ecosystems and important migratory fish species. The plant's advanced treatment helps minimize nutrient loading and protect downstream water quality.

The plant discharges into the local watershed within the Rhône River basin. The Rhône River flows southward through southeastern France into the Mediterranean Sea, supporting diverse aquatic life and serving as a major migratory corridor for fish such as eels and sturgeon. Advanced treatment at this plant reduces nutrient pollution, helping to protect downstream ecosystems from eutrophication.