Contamination of Arsenic in Groundwater …
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Fig. 1 Location of the study area and the sampling sites
2 Materials and Methods
2.1 Study Area
Study area lies in Bara District of Province No. 2, which is among one of the seventyseven districts of Nepal. Kalaiya is the district headquarter and covers an area of
1,190 km
2 and had a population of 687, 708 as of 2011. Bara District is surrounded
by Rautahat, Makawanpur, Parsa and India in east, north, west and south, respectively
(Fig. 1).
2.2 Water Sampling
In overall, thirty-six water samples were sampled from three different locations of
Bara District (Kalaiya Sub-metropolitan, Pheta Rural Municipality and Prasauni
Rural Municipality) in the month of June 2017 (Fig. 1). Collected samples for analysis
were from six dug wells and 30 tube wells. Depending on availability and the level
of groundwater at different locations, the tube wells are in place but constituting
various depths. For this study, water samples were collected from ten tube wells and
two dug wells water samples from each municipality.