Bourg Saint Maurice Wastewater Treatment Plant, Bourg-Saint-Maurice, France

The Bourg Saint Maurice wastewater treatment plant is located in Bourg-Saint-Maurice, a commune in the Savoie department of the Auvergne-Rhône-Alpes region in southeastern France. The plant serves a population of approximately 51,000, making it a medium-sized agglomeration under EU classification. It operates within the regulatory framework of the EU Urban Waste Water Treatment Directive (91/271/EEC), which sets standards for collection and treatment of urban wastewater. As a plant serving between 10,000 and 100,000 population equivalents, the EU UWWTD requires at least secondary treatment (biological treatment) for such agglomerations. The regulatory framework ensures compliance with discharge standards. The facility is part of France's national wastewater infrastructure managed by local authorities. The plant discharges treated effluent into the local watershed, which ultimately drains into the Isère River, a major tributary of the Rhône. The Rhône flows into the Mediterranean Sea near the Camargue delta. The receiving water bodies support diverse aquatic life and are important for regional water quality and ecological health.

The plant's treated effluent enters the local water system, which flows into the Isère River, a key tributary of the Rhône River. The Rhône is one of Europe's major rivers, draining into the Mediterranean Sea. The watershed supports diverse aquatic ecosystems, including fish species such as brown trout and grayling, and provides water for agriculture and recreation. The plant's discharge contributes to the overall nutrient load in the river system, making effective treatment essential for maintaining downstream water quality.