BOIS DES NONNES Wastewater Treatment Plant, Ittre, Belgium

BOIS DES NONNES is a municipal wastewater treatment plant located in Ittre, within the Brabant wallon province of Belgium. The facility serves a small population of 32 people, reflecting its role in a rural or peri-urban setting. As part of Belgium's wastewater infrastructure, it contributes to local sanitation and environmental protection. The plant provides secondary treatment, which typically involves biological processes to reduce organic matter and suspended solids. With a designed capacity of 150 m³/day and an actual discharge volume of 5.72 m³/day, the plant operates well below its capacity. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), small agglomerations like this are required to have appropriate treatment, and secondary treatment meets the standard for freshwater discharge. The treated effluent is discharged into local watercourses that eventually drain into the Scheldt basin or the Meuse basin, depending on the exact location. The plant helps protect downstream water quality and supports the ecological health of the region's rivers and streams. Its inland location reduces direct marine impact, but proper treatment remains essential for local aquatic life.

The plant discharges into local streams that are part of the Senne River basin, which flows into the Dijle and eventually the Scheldt River, reaching the North Sea. The area supports diverse aquatic life and is important for regional biodiversity. Effective treatment helps prevent nutrient enrichment and maintains water quality in this ecologically sensitive watershed.