“…Heavy metals intrusion in groundwater is a critical environmental problem all around the world, now a days (Kumar, Delson, & Babu, 2012). Literature suggests the release of numerous heavy metals in the atmosphere and water bodies from different industrial activities in Bangladesh (Rahman et al, 2012;Khan, Seddique, Rahman, & Shimizu, 2017;Haque, Reza, & Ahmed, 2018). The arsenic contamination (BBS, 2009) and salinity intrusion (Rahman, Majumder, Rahman, & Halim, 2011) in the groundwater of Bangladesh has exacerbated the dilemma of safe drinking water throughout the country as 97% of the total population depends on groundwater for their drinking water sources (Flanagan, Johnston, & Zheng, 2012).…”