POUANCE D 878 Rte d Ancenis Wastewater Treatment Plant, Ombrée d'Anjou, France

POUANCE D 878 Rte d Ancenis is an advanced wastewater treatment plant located in the Les Sauneries area of Pouancé, within the commune of Ombrée d'Anjou in the Maine-et-Loire department of Pays de la Loire, France. The plant serves a population of approximately 2,600 people and is part of the region's municipal wastewater infrastructure. As an advanced treatment facility, it goes beyond secondary treatment to remove nutrients and other pollutants, ensuring high-quality effluent. The plant has a designed capacity of 4,000 m³/day and currently discharges 463.84 m³/day, indicating ample capacity for future growth. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), agglomerations of this size (2,600 PE) are required to provide secondary treatment, but the plant exceeds this standard with advanced treatment. The treated effluent is discharged into local waterways that eventually flow into the Loire River basin, which drains into the Atlantic Ocean. The plant plays a key role in protecting the region's water quality and supporting the ecological health of downstream aquatic environments.

The plant discharges into the local watershed, which is part of the Loire River basin. The Loire River flows through western France and empties into the Bay of Biscay (Atlantic Ocean). The downstream environment includes diverse aquatic habitats that support fish species such as Atlantic salmon and European eel. The advanced treatment helps reduce nutrient loading, protecting water quality in the Loire estuary and coastal zone.