Le Touvet Wastewater Treatment Plant, Goncelin, Auvergne-Rhône-Alpes

Le Touvet wastewater treatment plant is located in the commune of Goncelin, within the Isère department of the Auvergne-Rhône-Alpes region in southeastern France. The plant serves a population of approximately 7,100 people, placing it in the category of small to medium agglomerations under EU classification. As a French facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. The directive also mandates appropriate treatment before discharge into freshwater bodies to protect water quality and ecosystems. The treated effluent is discharged into the Isère River, a major tributary of the Rhône River. The Rhône flows into the Mediterranean Sea, making this plant part of a large and ecologically significant river basin. The surrounding region is characterized by alpine terrain and supports diverse aquatic life.

The plant discharges into the Isère River, which flows into the Rhône River and ultimately reaches the Mediterranean Sea. The Isère River supports diverse aquatic ecosystems, including fish species such as brown trout and grayling. The downstream Rhône delta is an ecologically sensitive area with extensive wetlands and migratory bird habitats.