Sludge is one of the sources of organic fertilizer and it is rich in the necessary mineral elements, but global warnings confirm the presence of heavy elements that greatly hinder its use in agriculture, so this study was conducted as four levels of sludge were used (0,10,20,30) tons ha-1 and two types of the two bacteria, Enterobacter aerogenes, and Serratia marcescens, for the biological removal of heavy metals from the soil and reducing their uptake in plants. The results showed that the level is 30 tons ha-1 sludge gave the highest increase in the percentage of heavy metals in the plant and soil as it gave lead 4.81 ppm, cadmium 0.563 ppm and nickel 9.4 ppm in the plant. As for the soil, it gave lead 88.29 ppm, cadmium 2.134 ppm and nickel 78.8 ppm. The microorganisms had a positive effect in reducing the content of heavy elements in the plant, as the bacteria S. marcescens showed a significant effect in reducing the proportion of lead and cadmium, while the bacteria E. aerogenes had a significant effect in reducing the proportion of nickel. As for the soil, the bacteria S. marcescens and Enterobacter aerogenes had a significant effect in reducing the rate of lead, cadmium and nickel. The interaction also had a significant effect on reducing the content of heavy metals in the plant. The bacteria S. marcescens and E. aerogenes had a significant effect in reducing the percentage of lead when adding 30 tons ha-1 only. As for cadmium and nickel, S. marcescens and E. aerogenes achieved a significant response in reducing their content upon addition of 10, 20 and 30, respectively. As for the soil, the bacteria S. marcescens and E. aerogenes had a significant effect on reducing the percentage of lead when adding 20 and 30 tons ha-1 and S. marcescen bacteria also had a significant effect in reducing the percentage of nickel when adding 20 tons ha-1, while cadmium did not show any significant differences at any addition.