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Hydrogeochemistry and groundwater quality of the Kadava River Basin have been performed by analyzing 40 groundwater samples for pre- and post-monsoon seasons of 2011 through different geostatistical techniques. Analyses showed that the concentrations of Mg²⁺ exceeded Ca²⁺ in both the seasons suggesting silicate weathering as a source of ions. Average Ca + Mg values contribute 73.53% of total cations and signify the major supply of mafic minerals. Elevated TDS and TH limit drinking potential and other beneficial uses indicate permanently hard water. The average concentrations of the anions were found within Indian PL except NO₃, attributed to use of fertilizers. The spatial distribution maps show the EC, Mg, Na, Cl, and SO₄ to be generally higher for both the seasons in flood plain deposits than denuded landforms and middle-level/high-level plateaus containing fractured basalt aquifers …