MANDELAVAUX Wastewater Treatment Plant, Florenville, Luxembourg, Belgium

MANDELAVAUX is a wastewater treatment plant located in Florenville, within the province of Luxembourg, Belgium. It serves a small population of 271 people, reflecting a rural or small community scale. The plant is situated in the Walloon region, near the border with France. The plant provides secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The designed capacity is 720 m³ per day, with an actual discharge volume of 48.44 m³ per day, indicating significant spare capacity. The plant operates under Belgian regulations implementing EU directives. The treated effluent is discharged into the local watershed, which ultimately drains into the Semois River and then the Meuse River, flowing through Belgium and the Netherlands before reaching the North Sea. The plant helps protect the water quality of these rivers and the downstream ecosystem.

The plant discharges into the Semois River basin, a tributary of the Meuse River. The Meuse flows through Belgium and the Netherlands into the North Sea. The watershed supports diverse aquatic life and is an important ecological corridor. The plant's secondary treatment reduces organic pollutants and nutrients, helping to maintain water quality in this transboundary river system.