Salinity of Groundwater in Quaternary aquifer system is determined through field studies as groundwater sampling. The measurements are applied from a large distribution of study area to make clear overview of groundwater quality. In this study, a methodology was estimated and presented based on available hydrochemical data and statistical analyses to map the groundwater quality in the Quaternary aquifer of Sadat area. The quality of groundwater data was analyzed for the following parameters such as pH, Ca, Mg, Na, K, Cl, SO4, TDS and the contour maps were applied to the group of available analyses variables to map the spatial variation of the groundwater quality across the Sadat area. In hydrochemicl analyses of the variables showed that the aquifer quality is the most important factor affecting development in agriculture and industrial fields in the study area. Results of mapping and data analyses could potentially be used for groundwater management purposes in the study area.