BUTAY Wastewater Treatment Plant, Neupré, Liège, Belgium

BUTAY is a municipal wastewater treatment plant located in the Rotheux-Rimière area of Neupré, in the Liège province of Wallonia, Belgium. The plant serves a small population of 447 residents, reflecting its role in a rural or suburban community. As part of Belgium's wastewater infrastructure, it contributes to the protection of local water resources. 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. Secondary treatment typically involves biological oxidation and sedimentation to reduce organic matter and suspended solids. The plant has a designed capacity of 1,800 cubic meters per day, with a current discharge volume of 79.90 cubic meters per day, indicating ample reserve capacity. The treated effluent from BUTAY is discharged into the local water network, which ultimately drains into the Meuse River basin. The Meuse flows through Belgium and the Netherlands before reaching the North Sea. The plant's operation helps maintain water quality in the region, supporting aquatic life and downstream uses such as drinking water production and recreation.

BUTAY discharges into the local watershed that feeds the Meuse River, a major European waterway flowing through Belgium and the Netherlands to the North Sea. The Meuse basin supports diverse aquatic ecosystems and provides drinking water for millions. The plant's secondary treatment reduces organic pollution, protecting downstream habitats and water quality in this ecologically sensitive region.