RIOM ES MONTAGNES BOURG Wastewater Treatment Plant, Riom-ès-Montagnes, France

RIOM ES MONTAGNES BOURG is a wastewater treatment plant located in Riom-ès-Montagnes, a commune in the Cantal department of Auvergne-Rhône-Alpes, France. The plant serves a population of about 7,631 people, placing it in the small to medium agglomeration category under the EU Urban Waste Water Treatment Directive (UWWTD). As a French facility, the plant operates under the EU UWWTD (91/271/EEC), which requires secondary treatment for agglomerations of this size discharging into freshwater. French regulations mandate compliance with national standards derived from the directive. The plant's treated effluent likely discharges into a local watercourse that drains into the Dordogne River basin or the Loire basin, given the region's geography. The surrounding area is rural and mountainous, with sensitive aquatic ecosystems that benefit from proper wastewater treatment to prevent nutrient pollution and protect biodiversity.

The plant is situated in the Massif Central, a mountainous region with numerous rivers and streams. Its discharge likely flows into the Petite Rhue or a tributary of the Dordogne River, which eventually reaches the Atlantic Ocean. The local watershed supports diverse aquatic life, including fish species such as trout, and requires careful management to avoid eutrophication from nutrient inputs.