Brussels-Capital Region: A supply zone is a geographically defined area within which water intended for human consumption comes from one or more sources and within which water quality may be considered as being approximately uniform.

Brussels-Capital Region : location of Brussels drinking water catchment drainage gallery operated by VIVAQUA. Each section of the drainage gallery is named. Classified as protection area 1 of water extraction (with the extraction wells).

Brussels-Capital Region: localization of the extraction wells for drinking water in Brussels, run by VIVAQUA. Ranked as protected area 1 of the water extractions (with the drainage gallery)