CHINON Saint Louans Wastewater Treatment Plant, Chinon, France

CHINON Saint Louans is a municipal wastewater treatment plant located in Sauvegrain, Chinon, within the Indre-et-Loire department of Centre-Val de Loire, France. The plant serves a population of around 13,095, placing it in the medium agglomeration category under the EU Urban Waste Water Treatment Directive (91/271/EEC). As a French facility, the plant operates under national regulations transposing the EU directive, which requires secondary treatment for agglomerations of this size discharging into freshwater. The plant is expected to meet the directive's standards for biological treatment and nutrient removal where applicable. The treated effluent is discharged into the local watershed, which ultimately drains into the Loire River, one of France's major rivers. The Loire River basin supports diverse aquatic ecosystems and is an important ecological corridor. The plant's operations contribute to protecting the water quality of the Loire and its downstream environments.

The plant discharges into the Loire River basin, which flows through the Centre-Val de Loire region and eventually reaches the Atlantic Ocean. The Loire is a dynamic river system supporting diverse fish populations, including migratory species such as Atlantic salmon and European eel. The watershed includes sensitive floodplain habitats and wetlands that rely on good water quality for ecological health.