LUDES_MAILLY Wastewater Treatment Plant, Puisieulx, Grand Est, France

LUDES_MAILLY is an advanced wastewater treatment plant located in Puisieulx, near Reims in the Grand Est region of France. The plant serves a population of approximately 4,026 people and is part of the municipal wastewater infrastructure for the area. Its designed capacity is 2,250 m³/day, with a reported discharge volume of 718.23 m³/day. As an advanced treatment facility, LUDES_MAILLY goes beyond secondary treatment to remove nutrients and other pollutants, ensuring high-quality effluent. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), plants serving agglomerations of this size are required to provide secondary treatment, and advanced treatment is often mandated in sensitive areas to protect water quality. The treated effluent is discharged into the local watershed, which ultimately drains into the Seine River basin and flows toward the English Channel. The plant plays a key role in protecting the region's water resources and supporting the ecological health of downstream environments.

The plant discharges into the local watershed within the Seine River basin, which flows northward through the Paris Basin and eventually into the English Channel. This region supports diverse aquatic life and is important for migratory fish species. Advanced treatment helps minimize nutrient loading and protects downstream water quality in this ecologically sensitive area.