LE BLANC Wastewater Treatment Plant, Le Blanc, Centre-Val de Loire

LE BLANC is an advanced wastewater treatment plant located in Le Blanc, Indre, in the Centre-Val de Loire region of France. It serves a population of approximately 5,544 residents and has a designed capacity of 10,000 cubic meters per day, with an actual discharge volume of 989 cubic meters per day. The plant provides advanced treatment, which goes beyond secondary treatment to remove nutrients and other pollutants. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), France requires advanced treatment for agglomerations discharging into sensitive areas. The advanced level indicates compliance with stringent standards for nutrient removal. The treated effluent is discharged into the local watershed, which ultimately drains into the Creuse River and then the Loire River, one of France's major rivers flowing into the Atlantic Ocean. The plant plays a key role in protecting the water quality of the Creuse and Loire basins, supporting aquatic ecosystems and downstream uses.

The plant discharges into the Creuse River basin, a tributary of the Loire River. The Loire is the longest river in France and flows into the Atlantic Ocean, supporting diverse aquatic life including migratory fish species. The advanced treatment helps reduce nutrient loading, which is critical for preventing eutrophication in the Loire estuary and coastal waters.