The metal comes from the water pipes that have yet to be replaced by water manager Vivaqua, who has been working on them since 2003, reports La Libre Belgique. It is through these pipelines that lead leaks into tap water in Brussels.
In the first years, 6,000 pipes were replaced every year, but since 2010 the renewal process has stalled. Last year Vivaqua changed 373 lead pipes, bringing the total number since 2003 to 46,558.
Brussels member of parliament David Weytsman (MR), who raised the issue, denounces the lack of oversight on the project. He argues in favour of mapping out the Brussels water supply network.