GEOCHEMICAL MODELING AND PRELIMINARY ASSESSMENT OF TRACE METALS CONTAMINATION IN GROUNDWATER AQUIFER OF GUNA DISTRICT, INDIASUNIL KUMAR SRIVASTAVAAbstract Water is the most precious natural resource, which gets contaminated in the recent past through various anthropogenic activities. The study reveals that Guna district subsurface water gets contaminated by leaching chemical fertilizers used in agriculture. Nitrate is the principal ion released in groundwater due to the excess utilization of urea as chemical fertilizer in agriculture. Fluoride is also reported in subsurface water through the chemical weathering of CaF2 and other fluorite-rich minerals. Trace metals (Fe, Cu, Pb) are also reported in a few locations, affecting groundwater quality. A mathematical calculation has been performed to calculate the WQI value of the Guna district in this study. The interpretation of the WQI value for the study area indicates ~22.81% good water, ~71.14% poor water, and only ~5.37% very poor quality water. |