Conches en Ouche 2 Wastewater Treatment Plant, Conches-en-Ouche, Normandy

Conches en Ouche 2 is a wastewater treatment plant located in Conches-en-Ouche, a commune in the Eure department of Normandy, France. The plant serves a population of approximately 5,200 and has a designed capacity of 7,600 cubic meters per day, with an average discharge volume of 927.67 cubic meters per day. The plant employs advanced treatment processes, which go beyond the secondary treatment required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Advanced treatment typically includes nutrient removal (nitrogen and phosphorus) to protect sensitive receiving waters. The treated effluent is discharged into local watercourses that ultimately drain into the Seine River basin and the English Channel. The plant plays a key role in maintaining water quality in the region, supporting aquatic life and downstream ecosystems.

The plant discharges into the local watershed, which is part of the Seine River basin. The Seine flows through Paris and into the English Channel, supporting diverse aquatic habitats and serving as a critical water resource. The advanced treatment helps reduce nutrient loading, protecting downstream estuaries and coastal waters from eutrophication.