In many parts of the world, especially in areas such as Iran, groundwater is considered as an important source for meeting drinking and farming needs. Agricultural activities and the excessive use of chemical fertilizers are important factors in reducing the quality of groundwater. This study was conducted to investigate the distribution of groundwater quality in the Leishter plain aquifer in Kohgiluyeh and Boyerahmad Province and to prepare electrical conductivity maps, chlorine and TDS using interpolation methods such as kriging and spline in this range. According to qualitative maps, about half of the aquifer was in an acceptable position and the other part is in the middle position, which if not addressed, there is potential for improvement along the plain. It can also be concluded that the increase of human activities and transmitted infections from outside the study area are factors affecting the water quality of the Leishter plain.

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