COURVILLE SUR EURE Wastewater Treatment Plant, Courville-sur-Eure, France

COURVILLE SUR EURE is an advanced wastewater treatment plant located in Courville-sur-Eure, a commune in the Eure-et-Loir department of Centre-Val de Loire, France. The plant serves a population of approximately 4,280 residents, reflecting its role in managing municipal wastewater for this small agglomeration. As an advanced treatment facility, it goes beyond secondary treatment to remove nutrients and other pollutants, ensuring high-quality effluent. With a designed capacity of 5,000 m³/day and a current discharge volume of 763.54 m³/day, the plant operates well within its capacity. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), plants serving populations under 10,000 are generally required to provide secondary treatment, but this facility's advanced level exceeds those standards. The treated effluent is discharged into the local watershed, which drains into the Eure River, a tributary of the Seine. The Seine basin supports diverse aquatic life and is an important ecological corridor in northern France. The plant's advanced treatment helps protect downstream water quality in this sensitive river system.

The plant discharges into the Eure River, which flows into the Seine River and ultimately reaches the English Channel. The Seine basin is a major ecological corridor supporting fish species such as Atlantic salmon and eel. Advanced treatment at this plant reduces nutrient loading, helping to mitigate eutrophication risks in the downstream estuary and coastal waters.