The National Institute for Occupational
Safety and Health (NIOSH) recommends that the levels of chromium in water should be
reduced to 10−3 mg/m3. The metal is reported to be bio-accumulated into flora and fauna,
creating ecological problems [7,8]. Chromium toxicity to mammals and aquatic organisms
appears to be lower compared to other heavy metals, due to the general low solubility of
Cr(III) compounds, lowmobility in the environmental compartments and limited availability
to living organisms.