Role of Ion Chemistry and Hydro-Geochemical Processes in Aquifer Salinization—A Case Study from a Semi-Arid Region of Haryana, India

In the present study, a total of sixty groundwater samples, twenty each for pre-monsoon, monsoon and post seasons 2018, were collected from selected locations in Mewat district Haryana, India. Electrical conductivity (EC) was measured at site dissolved solids (TDS) estimated. Samples analysed anions (chloride, sulphate, bicarbonate) cations (calcium, potassium, magnesium, sodium). Multiple regression analysis performed to analyse data report dominant ions. Piper trilinear diagram Gibbs plots used find out water type factors controlling chemistry groundwater, respectively. The saturation index CaCO3, CaSO4 NaCl determined, using PHREEQC MODEL. Sodium calcium among cations, chloride anions, had highest degree affinity strong significance all three seasons. calcium–chloride dominated plot depicted that most Na+/Na+ + Ca2+ Cl−/Cl− HCO3− ratios show weathering rocks form minerals as major reason behind ionic groundwater. level dissolution is encountered case NaCl, followed by CaSO4, whereas CaCO3 depicts precipitation. geochemical aspects weathering, evaporation ion exchange are processes responsible high salinity, anthropogenic activities leading its expansion. findings this study will be useful management remediation salinity region.