RUMILLY Wastewater Treatment Plant, Rumilly, Auvergne-Rhône-Alpes, France

The RUMILLY wastewater treatment plant is located in Rumilly, a commune in the Haute-Savoie department of the Auvergne-Rhône-Alpes region in eastern France. The plant serves a population equivalent of approximately 34,983, placing it in the medium agglomeration category under EU classification. As a French wastewater 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 more advanced treatment if the receiving waters are designated as sensitive areas. The plant's designed capacity is 1.00 (likely in thousands of cubic meters per day or similar unit), indicating a moderate scale of operation. The treated effluent from the plant is discharged into the local water system, which ultimately drains into the Rhône River basin. The Rhône flows southward to the Mediterranean Sea, supporting diverse aquatic life and providing water for agriculture and industry. The plant plays a key role in protecting the water quality of the region's rivers and downstream ecosystems.

The plant discharges into the local watershed, which is part of the Rhône River basin. The Rhône is one of Europe's major rivers, flowing into the Mediterranean Sea. The downstream environment includes ecologically sensitive areas that support diverse aquatic species and migratory fish. Proper treatment helps prevent nutrient pollution and protects the river's ecological health.