Biwer_Wecker Wastewater Treatment Plant, Manternach, Luxembourg

Biwer_Wecker is a wastewater treatment plant located in Manternach, Canton Grevenmacher, Luxembourg, serving a population of approximately 2,348. The plant is situated in the Syrdall Schlass area along CR 134, within the Moselle River basin, which ultimately drains into the Rhine River and the North Sea. As a small agglomeration under EU regulations, the plant is subject to the Urban Waste Water Treatment Directive 91/271/EEC, which requires appropriate treatment before discharge into freshwater. Plants of this scale typically employ secondary biological treatment to meet effluent quality standards. The treated effluent is discharged into local watercourses that feed into the Moselle River, a major tributary of the Rhine. The Moselle valley supports diverse aquatic life and is an important ecological corridor in the region. The plant plays a key role in protecting water quality in this sensitive watershed.

The plant discharges into the Moselle River basin, which flows through Luxembourg, Germany, and France before joining the Rhine River and eventually the North Sea. The Moselle supports diverse aquatic ecosystems, including fish species such as salmon and trout, and is an important migratory corridor. The surrounding area is a mix of agricultural land and forests, making nutrient management critical to prevent eutrophication downstream.