Brussels-Capital Region : the localization of the culvert rivers in the Brussels Region. Includes additional information: the name and type (culvers river, sewer, ...) of the hydrological segment.

Brussels-Capital Region: the location and name of the ponds in the Brussels Region.

Brussels-Capital Region: localization of the discharge points of the two treatment stations of wastewater and rainwater of the Brussels agglomeration.

Brussels-Capital Region : location of the different groundwater level monitoring sites (or piezometric sites) managed by Brussels Environment under the surveillance monitoring of the groundwater status in accordance with the Ordonnance and the Water Framework Directive. Indication of the analyzed water body, the European Code and the Brussels code of the monitoring site.

Brussels-Capital Region: The nitrate-vulnerable zone is a protected area against the pollution of groundwaters caused by nitrates from agricultural sources. It was designated in accordance with the prescriptions of the European Directive 91/676/EEC, by the Ministerial Order of 25 May 1999.

Brussels-Capital Region: localization of the two treatment stations of wastewater and rainwater. The Brussels-North waste water treatment plant (AQUIRIS commissioned in 2007) and the waste water treatment plant Brussels-South (commissioned in 2000).

Brussels-Capital Region: localization of the discharge points of the two treatment stations of wastewater and rainwater of the Brussels agglomeration.

Brussels-Capital Region: Delineation of the Brussels agglomeration, in accordance with the directive 91/271/EEC concerning urban waste water treatment. The agglomeration is there defined as "an area where the population and/or economic activities are sufficiently concentrated for urban waste water to be collected and conducted to an urban waste water treatment plant or to a final discharge point". It corresponds to the two collecting basins of the waste water treatment plants of Brussels-North and Brussels-South.

Brussels-Capital Region : building means any physical construction formed of rigid exterior walls, roofed, permanently attached to land, and designed to accommodate human activity and / or shelter for animals, goods and machinery.

Brussels-Capital Region : Brussels-Capital statistical areas are grouped to form the districts of monitoring. Monitoring the neighborhood is an urban observation tool to help track and understand the evolution of Brussels districts in different aspects (demographic, social, health, economy, housing, mobility, quality of life, participation, ... ) to improve the efficiency of urban policy and help guide public and private investment in urban renewal ...