ARGENTRE Wastewater Treatment Plant, Argentré, France

ARGENTRE is a wastewater treatment plant located in the Hameau du Haut Mont-Roux area of Argentré, a commune in the Mayenne department of Pays de la Loire, France. The plant serves a population of approximately 1,810 people and is part of the municipal wastewater infrastructure for the region. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 4,000 m³ per day and an average discharge volume of 322.9 m³ per day, the plant operates well below its capacity, indicating room for future growth. As a French facility, it operates under the national regulations that transpose the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires advanced treatment for sensitive areas. The treated effluent is discharged into the local watershed, which ultimately drains into the Mayenne River, a tributary of the Loire River. The Loire River flows into the Atlantic Ocean, making the plant's discharge part of a larger river basin that supports diverse aquatic ecosystems and is important for regional water quality.

The plant's discharge enters the local watercourse, which flows into the Mayenne River and then the Loire River, one of France's longest rivers. The Loire basin is ecologically significant, supporting diverse fish species and migratory birds. The advanced treatment helps protect downstream water quality in this sensitive river system, which is important for both ecological health and human uses such as recreation and agriculture.