A study conducted by the researchers of Banaras Hindu University (BHU) has revealed that vegetables and grains frequently irrigated with mixed wastewater from industrial and residential areas of Bhadohi had higher concentrations of heavy metals like cadmium, nickel, chromium, copper and zinc than those irrigated with groundwater. Heavy metal contamination of the food chain is a threat to both food safety and human health. The findings have been published in a globally reputed journal, Toxicology Reports.
