MAY SUR EVRE Route de Trementines Wastewater Treatment Plant, Le May-sur-Èvre, France

MAY SUR EVRE Route de Trementines is a wastewater treatment plant located in Le May-sur-Èvre, a commune in the Maine-et-Loire department of Pays de la Loire, France. The plant serves a population of 2,444 and is part of the region's municipal wastewater infrastructure, operating under French regulations that transpose the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU directive for agglomerations of this size. With a designed capacity of 4,217 m³/day and an average daily discharge of 436.01 m³/day, the plant operates well below its capacity, indicating room for future growth or seasonal variations. The treated effluent is discharged into the local watershed, which ultimately drains into the Loire River basin. The Loire is one of France's major rivers, supporting diverse aquatic ecosystems and providing water for agriculture and drinking water downstream. The advanced treatment helps protect water quality in this sensitive river system.

The plant discharges into the local watercourse, which flows into the Loire River, the longest river in France. The Loire basin is ecologically significant, supporting migratory fish species such as Atlantic salmon and European eel, as well as diverse birdlife. Advanced treatment at this plant reduces nutrient loading and helps maintain water quality in the downstream river and its estuary.