INGRANDES BOURG Wastewater Treatment Plant, Ingrandes, Nouvelle-Aquitaine

INGRANDES BOURG is a wastewater treatment plant located in Ingrandes, a commune in the Vienne department of Nouvelle-Aquitaine, France. The plant serves a population of approximately 1,600 people, classifying it as a small agglomeration under French and EU regulations. It is situated inland, away from coastal areas, and operates within the broader water management framework of the Loire-Bretagne basin. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 2,000 m³/day and a current discharge volume of 285.44 m³/day, the plant operates well below its capacity, indicating room for future growth or seasonal variability. As a French facility, it is subject to national regulations transposing the EU directive, with permits issued by the local water agency (Agence de l'Eau Loire-Bretagne). The treated effluent from INGRANDES BOURG is discharged into the local water system, ultimately contributing to the Vienne River, a major tributary of the Loire River. The Loire River flows into the Atlantic Ocean, supporting diverse aquatic ecosystems along its course. The plant's advanced treatment helps protect downstream water quality, particularly in the Loire Valley, which is ecologically sensitive and supports migratory fish species such as Atlantic salmon and European eel.

The plant discharges into the Vienne River, a tributary of the Loire River, which flows into the Atlantic Ocean. The Loire basin is one of France's largest watersheds and supports diverse aquatic habitats, including wetlands and floodplains that are critical for migratory birds and fish. Advanced treatment at INGRANDES BOURG helps reduce nutrient loading and protect downstream water quality in this ecologically important river system.