Moncé-en-Belin RD 212 bis Wastewater Treatment Plant | Advanced Treatment in Pays de la Loire

Moncé-en-Belin RD 212 bis is an advanced wastewater treatment plant located in the commune of Moncé-en-Belin, within the Sarthe department of Pays de la Loire, France. The plant serves a population of approximately 2,310 residents and has a designed capacity of 3,200 cubic meters per day, with a current discharge volume of 412.10 cubic meters per day. As an advanced treatment facility, the plant goes beyond secondary treatment to remove nutrients and other pollutants, meeting stringent French and European standards. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), plants serving agglomerations between 2,000 and 10,000 population equivalent are required to provide secondary treatment; this plant's advanced level exceeds that requirement. The treated effluent is discharged into the local watershed, which ultimately drains into the Sarthe River, a tributary of the Loire River. The Loire River flows into the Atlantic Ocean, making the plant's operations important for protecting downstream aquatic ecosystems and water quality in the Loire basin.

The plant discharges into the Sarthe River basin, which flows into the Loire River, one of France's major rivers, and eventually reaches the Atlantic Ocean. The Loire basin supports diverse aquatic life, including migratory fish species such as Atlantic salmon and European eel. The advanced treatment helps reduce nutrient loading, which is critical for preventing eutrophication in downstream waters and maintaining the ecological health of the Loire estuary.