Majority of the groundwater samples fall in rock dominant region and confirms existence of rock-water interaction on the Gibbs plot.
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As per the United States Salinity (USSL) diagram the groundwater samples in the study area are free from sodium hazards however, their salinity hazard shows low to very high range.
Schoeller index values corroborate existence of Base Exchange reaction. Due to higher concentration of total dissolved solids, total hardness and magnesium, majority of the samples belongs to the very hard type. The Piper trilinear diagram reflects almost Ca2+- HCO3- type hydrochemical facies (alkaline earth exceeds alkalis and weak acids exceed strong acids). The abundance of cations and anions in the analysed groundwater samples is, Ca2+ (%) > Mg2+ (%) > Na+ (%) > K+ (%), and HCO3- (%) > Cl- (%) > SO42- (%) > NO3- (%) > F- (%), respectively. On the basis of ionic concentrations, the groundwater quality is evaluated in favour of its utility for drinking and irrigation purposes. The groundwater quality assessment study is attempted by examining the physicochemical parameters viz. Hydrogeochemical characterization of groundwater samples representing the urbanized and industrialised parts of Nagpur district, situated in Central India has been carried out in the pre-monsoon season of 2011.
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