West Bengal and Bihar are impacted the most by arsenic contamination of groundwater, the Centre has informed the National Green Tribunal (NGT). The tribunal is hearing the issue of rice being susceptible to arsenic contamination because it absorbs more of the toxic semi-metallic element from water and soil. Earlier, it sought a reply from the Centre on it. In an order dated December 16, a bench of NGT Chairperson Justice Prakash Shrivastava and expert member A Senthil Vel noted that the Union Ministry of Agriculture and Farmers Welfare had filed its reply after seeking inputs from the Indian Council of Agricultural Research (ICAR). "States of West Bengal and Bihar are reported to be most affected by arsenic contamination of groundwater irrigation by contaminated groundwater is the major route for arsenic entry into agricultural soil which ultimately leads to its entry into the food chain," the Centre said in its reply. There can be a "significant build-up" of the toxic element in r