SALBRIS Valaudran Wastewater Treatment Plant, Salbris, France

The SALBRIS Valaudran wastewater treatment plant is located in Salbris, a commune in the Loir-et-Cher department of Centre-Val de Loire, France. The plant serves a population of approximately 6,608 people, classifying it as a small to medium agglomeration under the EU Urban Waste Water Treatment Directive (91/271/EEC). As a French wastewater facility, the plant operates within the national regulatory framework that implements the EU UWWTD. For agglomerations of this size, the directive requires at least secondary treatment (biological treatment) to reduce organic matter and suspended solids. The plant's discharge is subject to French water law and permits issued by the local water agency (Agence de l'Eau). The treated effluent from the plant is discharged into the local watershed, which drains into the Sauldre River, a tributary of the Cher River, and ultimately into the Loire River. The Loire basin is ecologically significant, supporting diverse aquatic life and migratory fish species. The plant plays a role in protecting water quality in this sensitive river system.

The plant discharges into the Sauldre River, which flows into the Cher River, a major tributary of the Loire River. The Loire basin is one of France's largest watersheds and supports a rich diversity of fish, including Atlantic salmon and eel. The plant's treatment helps maintain water quality in this ecologically important river system, which is subject to the EU Water Framework Directive's goals for good ecological status.