An apparatus for purifying water (100, 200), comprising: a purified water storing unit configured to store the purified water therein; an ice making unit (120, 220) comprising an ice maker configured to make accommodated water into ice cubes; an ice storing unit configured to store the ice cubes discharged from the ice maker, a cold water unit configured to generate cold water by receiving the ice cubes made by the ice making unit; a cooling unit (140, 240) configured to supply cold air to the ice making unit; and a discharging unit comprising an ice discharge duct configured to guide discharge of the ice cubes and an opening/closing member configured to selectively open or close the end of the ice discharge duct in a discharge direction of the ice cubes, wherein the ice storing unit selectively supplies the ice cubes to the cold water unit or outside and comprises: an ice container having first and second openings (124a, 124b) through which the ice cubes are discharged out and disposed on surfaces of the ice container facing each other; and an ice transferring portion disposed in the ice container, and configured to transfer the ice cubes to the first opening or the second opening, wherein one of the first and second openings (124a, 124b) is communicated with a discharging unit configured to discharge the ice cubes to outdise, and another of the first and second openings (124a, 124b) serves to guide the ice cubes to the cold water unit, wherein the ice transferring portion comprises: a rotation shaft having both ends disposed to be toward the first and second openings (124a, 124b); a transferring screw attached to the rotation shaft, and configured to transfer the ice cubes to the first opening or the second opening according to rotation direction of the rotation shaft; and a rotation driving portion disposed at one end of the rotation shaft, and configured to rotate the rotation shaft in a forward or backward direction. a purified water storing unit configured to store the purified water therein; an ice making unit (120, 220) comprising an ice maker configured to make accommodated water into ice cubes; an ice storing unit configured to store the ice cubes discharged from the ice maker, a cold water unit configured to generate cold water by receiving the ice cubes made by the ice making unit; a cooling unit (140, 240) configured to supply cold air to the ice making unit; and a discharging unit comprising an ice discharge duct configured to guide discharge of the ice cubes and an opening/closing member configured to selectively open or close the end of the ice discharge duct in a discharge direction of the ice cubes, wherein the ice storing unit selectively supplies the ice cubes to the cold water unit or outside and comprises: an ice container having first and second openings (124a, 124b) through which the ice cubes are discharged out and disposed on surfaces of the ice container facing each other; and an ice transferring portion disposed in the ice container, and configured to transfer the ice cubes to the first opening or the second opening, an ice container having first and second openings (124a, 124b) through which the ice cubes are discharged out and disposed on surfaces of the ice container facing each other; and an ice transferring portion disposed in the ice container, and configured to transfer the ice cubes to the first opening or the second opening, wherein one of the first and second openings (124a, 124b) is communicated with a discharging unit configured to discharge the ice cubes to outdise, and another of the first and second openings (124a, 124b) serves to guide the ice cubes to the cold water unit, wherein the ice transferring portion comprises: a rotation shaft having both ends disposed to be toward the first and second openings (124a, 124b); a transferring screw attached to the rotation shaft, and configured to transfer the ice cubes to the first opening or the second opening according to rotation direction of the rotation shaft; and a rotation driving portion disposed at one end of the rotation shaft, and configured to rotate the rotation shaft in a forward or backward direction. a rotation shaft having both ends disposed to be toward the first and second openings (124a, 124b); a transferring screw attached to the rotation shaft, and configured to transfer the ice cubes to the first opening or the second opening according to rotation direction of the rotation shaft; and a rotation driving portion disposed at one end of the rotation shaft, and configured to rotate the rotation shaft in a forward or backward direction.