MONTFORT SUR MEU 3 Wastewater Treatment Plant, Talensac, Brittany

MONTFORT SUR MEU 3 is a municipal wastewater treatment plant located in Talensac, in the Brittany region of France. The plant serves a population equivalent of approximately 10,010 people, classifying it as a medium-sized agglomeration under EU regulations. As a French facility, the plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for discharges into freshwater and estuaries from agglomerations of this size. The plant's treated effluent is discharged into the local watershed, which ultimately drains into the Meu River, a tributary of the Vilaine River, and then into the Atlantic Ocean. The receiving waters support diverse aquatic life and are part of the broader Brittany hydrological network, which is ecologically sensitive due to agricultural runoff and urban pressures.

The plant discharges into the Meu River, a tributary of the Vilaine River, which flows into the Atlantic Ocean near the Bay of Biscay. This watershed supports diverse aquatic ecosystems, including fish species such as Atlantic salmon and sea trout, and is influenced by agricultural activities in the region. The downstream environment includes estuarine habitats that are important for migratory birds and marine life.