Groundwater Quality Assessment for Drinking Purpose of Taluka Chachro, Thar Desert, Pakistan; Using Water Quality Indices, and Geospatial Techniques

Groundwater quality of taluka Chachro was investigated by analyzing thirty-two groundwater samples for drinking purpose. Multivariate statistical approaches with GIS interpolations (IDW) were applied the identification significant geochemical processes governing quality.. Results showed concentrations physiochemical parameter in study area exceeded prescribed level WHO guidelines. The EC and TDS varied from 2593-18950 μS/cm 1659-12128 mg/l, respectively. Ca, Mg, Na, K range 36-288, 17-272, 420-3280, 9.5-101 While, Cl, HCO3, SO4, NO3 539-5738, 210-1150, 79-870, 6.66-17.13 mg/l mean values EC, TDS, higher than 2011. Higher above acceptable limits recorded 96.15%, SO4 88.46%, HCO3 82.16% analysed samples. analysis suggested that input natural have influenced which resulted changing chemistry Chachro. results revealed dominant trend among cations Na>Ca>Mg>K while anions it Cl>HCO3>SO4. Based on water index 50% unsuitable drinking.