FERE CHAMPENOISE Wastewater Treatment Plant, Fère-Champenoise, Grand Est

The FERE CHAMPENOISE wastewater treatment plant is located in Fère-Champenoise, a commune in the Marne department of the Grand Est region, France. The plant serves a population of approximately 3,107 residents and has a designed capacity of 3,000 cubic meters per day, with an average discharge volume of 554.28 m³/day. As an advanced treatment facility, it goes beyond the secondary treatment requirements of the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size (under 10,000 population equivalent). Advanced treatment typically includes nutrient removal (nitrogen and phosphorus) to protect sensitive receiving waters, which is common in the Grand Est region due to its agricultural and ecological significance. The plant discharges treated effluent into local watercourses that ultimately drain into the Marne River, a major tributary of the Seine. The Seine basin supports diverse aquatic life and provides drinking water for millions. The advanced treatment helps reduce nutrient loading, mitigating eutrophication risks in downstream rivers and the Seine estuary.

The plant's treated effluent flows into local streams that feed the Marne River, which joins the Seine River near Paris. The Seine basin is ecologically significant, supporting fish species such as pike and perch, and is a critical water resource for the Île-de-France region. Advanced treatment at this plant helps control nutrient pollution, protecting downstream water quality and aquatic habitats from excessive algal growth.