Delineating low-arsenic groundwater environments in the Bengal Aquifer System, Bangladesh

M. A. Hoque, W. G. Burgess, M. Shamsudduha, K. M. Ahmed

Research output: Contribution to journalArticlepeer-review


Studies within the As-affected Bengal Basin have indicated that low-As groundwater can be found in a variety of geological and geomorphological settings. The hydrogeological environments that host low-As groundwater may be interpreted within a geological framework determined by the Quaternary evolution of the Bengal Aquifer System (BAS). This provides the basis for delineating the position and extent of shallow low-As groundwater, low-As groundwater in oxidised ‘red-bed’ sediments, and deep low-As groundwater. Data available on a national scale allow a preliminary delineation of these low-As groundwater environments across Bangladesh, based on empirical associations of low-As groundwater occurrences with topography, water table elevation, surface sediment lithology, geology and the screen depth of deep wells in low-As zones.
Original languageEnglish
Pages (from-to)614-623
Number of pages10
JournalApplied Geochemistry
Issue number4
Early online date6 Jan 2011
Publication statusPublished - 1 Apr 2011
Externally publishedYes


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