GIS and statistical approach to assess the groundwater quality of Nanded Tehsil, (M.S.) India

Abstract

The present research work has been done to assess the groundwater quality and its drinking suitability by developing a Water Quality Index (WQI) for Nanded Tehsil, Maharashtra. The representative groundwater samples (50) were collected from Dug/Bore wells during pre monsoon 2012. By clutching Hydrochemical analysis and GIS based IDW technique were used to represent spatial variation of WQI in study area. The physicochemical parameters viz. pH, EC, TDS, TH, Ca2+, Mg2+, Na+, K+, CO3−, HCO3−, Cl−, NO3−, SO4−, PO4− were determined to assess the groundwater quality and compared with BIS standards 2003. Water quality index used to classify water into four categories. Water quality index shows that 14 % samples are excellent, 84 % samples are good and 2 % Poor for drinking purpose. The GIS tools and statistical techniques used for spatial distribution and representation of water quality.