Hexavalent Chromium Cr(vi) is a carcinogen Sources Steel-making cutting grinding and welding Spills and residues of electroplating baths Chromate emissions from cooling towers(used to inhibit corrosion)Hexavalent Chromium • Cr (VI) is a carcinogen • Sources – Steel-making, cutting, grinding, and welding – Spills and residues of electroplating baths – Chromate emissions from cooling towers (used to inhibit corrosion)