CHALLANS La Rive Wastewater Treatment Plant - Challans, France

CHALLANS La Rive is a municipal wastewater treatment plant located in Challans, Vendée, in the Pays de la Loire region of France. The facility serves a population of approximately 24,950, placing it in the medium agglomeration category under EU regulations. As a French plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size discharging into freshwater or estuaries. The plant's designed capacity is 1.00 (likely in thousands of cubic meters per day), indicating a facility scaled to handle the local population's wastewater load. The treated effluent is discharged into the local watershed, which ultimately drains into the Atlantic Ocean via the Vendée coastal rivers. The plant plays a key role in protecting the region's water quality, supporting aquatic life in the downstream water bodies and contributing to the ecological health of the nearby coastal zone.

The plant discharges into the local river system within the Vendée basin, which flows into the Bay of Biscay in the Atlantic Ocean. This coastal region supports diverse marine and estuarine habitats, including important nursery areas for fish. The treatment plant helps reduce nutrient and pollutant loads, safeguarding water quality in the downstream environment.