Abstract
The groundwater geochemistry and arsenic exposure from drinking water in rural Bengal have been vividly studied in the present investigation. The study area designated for the current study is a part of the Bengal basin, namely, Chakdah block, Nadia district, West Bengal, India. It is pragmatic that the shallow aquifers (<50 m) are often poisoned with geogenic arsenic, whereas deeper aquifers (>100 m) are mostly free from arsenic in groundwater. In some pockets, deeper aquifers are contaminated which is surrounded by safer aquifers. Mostly, shallow aquifers (<50 m) are contaminated with arsenic surrounded by green patches and are scattered throughout the study area with more heterogeneity. Furthermore, sedimentological (color of the sediment and its successions) and/or geomorphological landforms (local recharge and land-use pattern) are playing a key role to control the arsenic distribution pattern in groundwater from the study area. For the enduring mitigation options of safe water supply, the findings from this investigation are very useful.
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