A pump assembly configured to generate flow of water inside a water supply pipe and a water discharge pipe that are provided in a clothes treating apparatus, using rotation of a motor, the pump assembly comprising: a first passage pipe connectable with the water supply pipe; a second passage pipe connectable with the water discharge pipe, wherein the pump assembly comprises: a wheel that is rotatable by the motor; a pair of clutches (75a, 75b) provided in both sides of the wheel, respectively, wherein the pair of the clutches (75a, 75b) have the same rotational center with the wheel and are configured to be independently rotatable with respect to the wheel; a pair of shafts fixed to rotational centers of the clutches (75a, 75b), respectively; a first and second impeller (77a, 77b) connected with each of the shafts, respectively, and rotatable according to the rotation of the clutches (75a, 75b); and a connecting arm configured to transmit a rotational force of the wheel to the clutches (75a, 75b); characterized in that the connecting arm is rotatably provided in the wheel, and in that a rotation range of the connecting arm is limited to transmit the rotational force of the wheel to one of the clutches (75a, 75b) based on the rotational direction of the motor, wherein the pair of clutches (75a, 75b) comprises a pair of projections (751a, 751b) respectively projected toward the wheel and configured to contact with the connecting arm. a first passage pipe connectable with the water supply pipe; a second passage pipe connectable with the water discharge pipe, wherein the pump assembly comprises: a wheel that is rotatable by the motor; a pair of clutches (75a, 75b) provided in both sides of the wheel, respectively, wherein the pair of the clutches (75a, 75b) have the same rotational center with the wheel and are configured to be independently rotatable with respect to the wheel; a pair of shafts fixed to rotational centers of the clutches (75a, 75b), respectively; a first and second impeller (77a, 77b) connected with each of the shafts, respectively, and rotatable according to the rotation of the clutches (75a, 75b); and a connecting arm configured to transmit a rotational force of the wheel to the clutches (75a, 75b); characterized in that the connecting arm is rotatably provided in the wheel, and in that a rotation range of the connecting arm is limited to transmit the rotational force of the wheel to one of the clutches (75a, 75b) based on the rotational direction of the motor, wherein the pair of clutches (75a, 75b) comprises a pair of projections (751a, 751b) respectively projected toward the wheel and configured to contact with the connecting arm. a wheel that is rotatable by the motor; a pair of clutches (75a, 75b) provided in both sides of the wheel, respectively, wherein the pair of the clutches (75a, 75b) have the same rotational center with the wheel and are configured to be independently rotatable with respect to the wheel; a pair of shafts fixed to rotational centers of the clutches (75a, 75b), respectively; a first and second impeller (77a, 77b) connected with each of the shafts, respectively, and rotatable according to the rotation of the clutches (75a, 75b); and a connecting arm configured to transmit a rotational force of the wheel to the clutches (75a, 75b); characterized in that the connecting arm is rotatably provided in the wheel, and in that a rotation range of the connecting arm is limited to transmit the rotational force of the wheel to one of the clutches (75a, 75b) based on the rotational direction of the motor, wherein the pair of clutches (75a, 75b) comprises a pair of projections (751a, 751b) respectively projected toward the wheel and configured to contact with the connecting arm.