Araihazar village in the floodplains of central Bangladesh showing the small scale variability of groundwater arsenic (van Geen et al., 2003). Tube-wells are denoted by symbols graduated in color and size to depict the nature of groundwater arsenic heterogeneity. Small blue circles correlate to wells with <10 ug/L arsenic and large red circles correlate to wells in excess of 300ug/L arsenic. Groundwater >10ug/L arsenic is noncompliant with the provisional standard of the WHO.
Body copy here.
Hopefully no arsenic here!