LAIGNE EN BELIN ST GERVAIS Wastewater Treatment Plant, Laigné-Saint-Gervais, France

LAIGNE EN BELIN ST GERVAIS is a municipal wastewater treatment plant located in Laigné-Saint-Gervais, within the Sarthe department of the Pays de la Loire region in France. The facility serves a population of approximately 2,550 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 standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. With a designed capacity of 3,000 cubic meters per day and a current discharge volume of 454.92 cubic meters per day, the plant operates well within its capacity, ensuring effective treatment of incoming wastewater. The treated effluent is discharged into the local water system, which ultimately drains into the Sarthe River and then the Loire River, one of France's major waterways. The Loire River basin supports diverse aquatic ecosystems and is an important ecological corridor. The plant's advanced treatment helps protect downstream water quality and the sensitive environments of the Loire Valley.

The plant discharges into the Sarthe River basin, which flows into the Loire River, the longest river in France. The Loire River and its estuary support a rich diversity of fish species, including Atlantic salmon and European eel, and the river valley is a critical migratory corridor for birds. The advanced treatment level helps minimize nutrient and pollutant loads, protecting the ecological health of the downstream river system and the Loire estuary.