Hesperange Wastewater Treatment Plant, Howald, Luxembourg

The Hesperange wastewater treatment plant is located in Howald, a town in the canton of Luxembourg, Luxembourg. The facility serves a population of approximately 16,476 people, classifying it as a medium-sized agglomeration under EU regulations. Its address is Rue de l'Alzette, Station d'épuration d'Hespérange, Howald, Hesperange. As a plant serving over 10,000 people, it falls under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment as a minimum. For agglomerations of this size, the directive also mandates more advanced treatment if the receiving waters are sensitive to eutrophication. It is expected to comply with national and EU standards. The plant discharges treated effluent into the local water system, likely the Alzette River, which flows through Luxembourg and eventually joins the Sauer River, a tributary of the Moselle. The Moselle drains into the Rhine, which flows to the North Sea. This catchment supports diverse aquatic life and is important for regional water quality.

The Hesperange plant discharges into the Alzette River, a tributary of the Sauer River, which flows into the Moselle and then the Rhine, ultimately reaching the North Sea. The Alzette River runs through urban and agricultural areas, and its water quality is critical for downstream ecosystems, including fish populations and riparian habitats. The region's watershed is part of the Rhine basin, which supports a variety of species and is subject to international water quality agreements.