One hundred and nineteen karst springs, all with electrical conductivity of less than
500 gmhosfcm, discharging two carbonatic aquifers in Zagrosides of Iran are chosen
and studied. The results indicate that the lithology of each unit is well reflected in the
chemistry of the springs and the overall mineralogical composition of the aquifer can
successfully be reconstructed from the hydrochemistry of the springs using a mass
balance approach. A comparison of the chemistry of the springs reveals that the
significant difference is due to the dolomitic nature of one of the studied aquifers