Now a day’s bioremediation technologies are going to be classified as in-situ or ex-situ. In in-situ bioremediation also involves treating the contaminated material at the location, whereas ex-situ involves the removal of the contaminated material to be treated elsewhere.  In bioremediation would occur on its natural attenuation or may exclusively effectively occur through the addition of fertilizers, oxygen, etc., it leads to facilitate encourage the growth of the pollution-eating microbes at intervals the medium. However, not all contaminants unit of measurement merely treated by bioremediation using microorganisms.