which might due to higher bacterial cell density at high levels of heavy metals. According to the column test results, the highest bioremediation efficiencies were noted for Pb, while the lowest removal efficiencies were detected for Cd. Bioremediation with the bacterial mixtures of isolated strains is an effective method for heavy metal removal from contaminated environments. This may prove to be a good strategy for developing an effective, efficient, and economic method of heavy metal bioremediation, and the introduction of these indigenous bacteria could be used for contaminated soil bioremediation without disturbing the target environment