A dishwasher and a method for controlling the same are disclosed, the dishwasher including washing part comprising a sump for accommodating wash water for washing contaminated dishes, a washing pump for pumping wash water accommodated in the sump, and a filtering member for filtering contaminants contained in the wash water, a draining part for draining contaminants and wash water filtered by the washing part; and a contaminant disposal part for drying contaminants discharged from the draining part. The dishwasher in accordance with the present invention has a contaminant disposal part installed thereat for drying or fermenting contaminants, thereby minimizing environmental pollution. Since contaminants are prevented from being decayed, the dishwasher is sanitarily used.