The world population rising very fast and it has resulted in increasing the area of polluted soil, water and air. In order to cater to the demands of the people, the rapid expansion of industries, vehicles, etc. is necessary. But all of these developments make our world, especially urban area, heavily polluted. And many kind of contaminant substances showing bad effects to human health. Our research work aimed to assess to Ulaanbaatar city soil contamination using sanitary microbiological and bacterial studies. Recently conducted 88% of all of soil samples have revealed Salmonella, Cl.perfringen, E.coli, and Citrobacter bacteria of Ulaanbaatar city soil. In detail: A total of 12 percent non contaminated and 53% slightly, 24% moderate, 11% of the high contaminated. The Soil pollution main source in the Ger District can be attributed mainly to the lack of sewage systems. In ger areas, the large majority of households use pit latrines.
