BOMAL DURBUY Wastewater Treatment Plant, Durbuy, Luxembourg, Belgium

BOMAL DURBUY is a municipal wastewater treatment plant located in Durbuy, within the Luxembourg province of Wallonia, Belgium. The facility serves a population of approximately 3,424 residents, classifying it as a small agglomeration under European Union standards. It operates under Belgium's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for all freshwater discharges from agglomerations of this size. The plant provides secondary treatment, a biological process that significantly reduces organic matter and suspended solids. Its designed capacity is 10,170 cubic meters per day, with an average discharge volume of 612 cubic meters per day, indicating ample reserve capacity for future growth. As a secondary treatment facility, it meets the EU directive's minimum requirements for inland discharges, ensuring compliance with water quality standards. The treated effluent is discharged into local streams that flow into the Ourthe River, a tributary of the Meuse River. The Meuse ultimately drains into the North Sea via the Dutch delta. The plant plays a vital role in protecting the Ourthe's water quality, which supports diverse aquatic life and recreational activities in the Ardennes region. Its operation helps maintain the ecological balance of this sensitive watershed.

The plant discharges into small watercourses that feed the Ourthe River, a major tributary of the Meuse. The Meuse flows through Belgium and the Netherlands before reaching the North Sea. This watershed supports diverse aquatic ecosystems, including fish species such as brown trout and grayling, and is an important corridor for migratory birds. The plant's secondary treatment helps reduce nutrient loading, protecting downstream water quality in a region valued for its natural landscapes and tourism.