SAINT AIGNAN SUR CHER Wastewater Treatment Plant, Saint-Aignan, France

The SAINT AIGNAN SUR CHER wastewater treatment plant is located in Saint-Aignan, a commune in the Loir-et-Cher department of the Centre-Val de Loire region, France. The plant serves a population of approximately 5,491 and is situated along the Route de Saint-André. It operates as part of the municipal wastewater infrastructure for the area. The plant provides advanced treatment, which goes beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 8,670 m³/day and an average discharge volume of 979.58 m³/day, the facility has ample capacity to handle current loads. The advanced treatment level ensures high-quality effluent suitable for discharge into sensitive environments. The treated effluent is discharged into the local watershed, which ultimately drains into the Cher River, a tributary of the Loire River. The Loire basin is ecologically significant, supporting diverse aquatic life and providing important habitats. The plant's advanced treatment helps protect the water quality of the Cher and Loire rivers, contributing to the overall health of the Loire Valley ecosystem.

The plant discharges into the Cher River, which flows into the Loire River, one of France's longest rivers. The Loire basin is a vital ecological corridor, supporting diverse fish species and migratory birds. The advanced treatment provided by the plant helps maintain water quality in this sensitive river system, which is important for both biodiversity and downstream water uses.