eng Enviro Research Publishers Current Agriculture Research Journal 2347-4688 2321-9971 2023-01-05 10 3 230 246 12049 article Channamma. S. Gour 1 Prakash Kariyajjanavar 1 K.Channabasappa 2 Arun Kumar. S.L 3 Vidyasagar.C.C 4 M. Lingadevaru 2 Department of Environmental Science, Gulbarga University, Kalaburagi 585 106, Karnataka Department of Geology, Central University of Karnataka, Kadaganchi, Kalaburagi Department of Civil Engineering, GM Institute of Technology Davangere-577 006, Karnataka Department of Chemistry, Rani Channamma University, Belagavi, Karnataka To determine the geochemical processes impacting groundwater geochemistry and its appropriateness for drinking and irrigational uses, a thorough examination of groundwater is conducted in some areas of the Afzalpur taluk. According to the results of a thorough chemical analysis, the research area's groundwater has a pH average between 6.7 and 6.3, making it fairly acidic. Mg²⁺ and Ca²⁺ cations and HCO₃^- anions are also present in high amounts. Ion-exchange and rock weathering mechanisms were perceived to dominate the groundwater chemistry, with anthropogenic sources playing a minor role. Particularly, the electrical conductivity, total hardness (TH), and concentrations of Na⁺ and HCO₃^- exceeded the BIS and WHO water quality standards' acceptable limits. Groundwater suitability for irrigation was assessed on the basis of sodium adsorption ratio, Na%, magnesium hazard (MH), residual sodium carbonate (RSC), and Kelley's index (KI). Above parameters revealed that nearly 40 to 50 % of the groundwater in the sampling sites was of high-quality for irrigation purpose. https://www.agriculturejournal.org/volume10number3/hydrogeo-chemical-processess-and-evaluation-of-groundwater-quality-for-drinking-and-irrigation-purposes-in-afzalpur-taluk-karnataka-india/ Afzalpur taluk; Correlations; Drinking water quality; Geo-chemical modeling; Gibb’s plot;  Hydro chemical faces; Irrigation water quality; Saturation Index