A dishwasher that includes a tub including an interior area that is configured to receive objects and includes a bottom surface, wherein the bottom surface of the tub includes a first hole; a spray arm that is located in the tub and that is configured to spray water; a sump that is (i) coupled to the tub, (ii) located under the first hole, and (iii) configured to store water; a pump configured to provide water stored in the sump to the spray arm; a cover including a cover body that is coupled to the first hole, and a second hole penetrating the cover body; a supporter including a support body that is coupled to the second hole, and a third hole penetrating the support body; and a filter unit that is coupled to the third hole and that is configured to filter water provided to the sump is disclosed.