groundwater

As per the Economic Survey 2021-22, the groundwater in rural areas of 31 out of 38 districts of Bihar is affected by arsenic, fluoride, and iron contamination. ''A total of 4,742 rural wards in 14 districts situated along the Ganga are particularly affected by arsenic contamination," stated the report. Notably, fluoride contamination is reported in 11 districts and excess iron in nine Kosi basin districts of the state.