In Nepal, arsenic (As) contamination is a major issue of current drinking water supply
systems using groundwater and has recently been one of the major environmental health
management issues especially in the plain region, ie, in the Terai districts, where the
population density is very high. The Terai inhabitants still use hand tube and dug wells (with
hand held pumps that are bored at shallow to medium depth) for their daily water
requirements, including drinking water. The National Sanitation Steering Committee …