CHALINDREY Wastewater Treatment Plant, Torcenay, Grand Est, France

The CHALINDREY wastewater treatment plant is located in Torcenay, a commune in the Haute-Marne department of the Grand Est region, France. The plant serves a population of approximately 3,300 people, placing it in the small agglomeration category under French and EU regulations. The plant employs advanced treatment processes, which go 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 4,000 m³/day and an average daily discharge of 588.71 m³/day, the plant operates well below its capacity, indicating room for future growth or seasonal variations. The treated effluent is discharged into a local watercourse that ultimately drains into the Seine River basin, contributing to the water quality of the Seine and its downstream ecosystems. The advanced treatment helps protect the sensitive aquatic environments in the region, supporting biodiversity and recreational uses of the water bodies.

The plant discharges into a tributary of the Marne River, which flows into the Seine River and eventually reaches the English Channel. The Seine basin supports diverse aquatic life and is an important ecological corridor. Advanced treatment at this plant helps reduce nutrient loads and pollutants, protecting downstream water quality and habitats.