A cold water generating apparatus, comprising: an apparatus body; a water tank which is provided in the apparatus body and which accommodates water flowing in from a water supply source; a cold water generation pipe which is provided in the apparatus body so as to be connected to the water tank, and which allows the water accommodated in the water tank to flow thereto, to then be discharged; and a cooling unit which is mounted on an outer surface of the apparatus body, and which cools the apparatus body so that the water accommodated in the water tank and the water flowing in the cold water generation pipe is cooled, wherein the apparatus body has a tank insertion space having one open side so that at least a portion of the water tank is inserted thereinto, the water tank includes a tank main body which is inserted into the tank insertion space and having one open side, and a tank cover which is coupled to the apparatus body so as to cover the one open side of the tank main body, and having an inlet which allows water from the water supply source to flow into the tank main body and a connector connected to the cold water generation pipe, the apparatus body and the water tank include a material having thermal conductivity of 10 W/(m · K) or higher at room temperature, characterized in that the apparatus body and the cold water generation pipe are made of metal, and the apparatus body and the cold water generation pipe are integrally formed by die casting, the connector of the tank cover is connected to the cold water generation pipe by a fitting member so that the water from a water supply source is primarily cooled in the water tank and the primarily-cooled water is cooled secondarily in the cold water generation pipe during a water outflow process. an apparatus body; a water tank which is provided in the apparatus body and which accommodates water flowing in from a water supply source; a cold water generation pipe which is provided in the apparatus body so as to be connected to the water tank, and which allows the water accommodated in the water tank to flow thereto, to then be discharged; and a cooling unit which is mounted on an outer surface of the apparatus body, and which cools the apparatus body so that the water accommodated in the water tank and the water flowing in the cold water generation pipe is cooled, wherein the apparatus body has a tank insertion space having one open side so that at least a portion of the water tank is inserted thereinto, the water tank includes a tank main body which is inserted into the tank insertion space and having one open side, and a tank cover which is coupled to the apparatus body so as to cover the one open side of the tank main body, and having an inlet which allows water from the water supply source to flow into the tank main body and a connector connected to the cold water generation pipe, the apparatus body and the water tank include a material having thermal conductivity of 10 W/(m · K) or higher at room temperature, characterized in that the apparatus body and the cold water generation pipe are made of metal, and the apparatus body and the cold water generation pipe are integrally formed by die casting, the connector of the tank cover is connected to the cold water generation pipe by a fitting member so that the water from a water supply source is primarily cooled in the water tank and the primarily-cooled water is cooled secondarily in the cold water generation pipe during a water outflow process.