Drinking water safety on campus has always been the most important. Litree provides the targeted water purification programs on the classroom building, office conference room, and cafeteria. On the basis of ensuring the safety standards of purified water quality, the direct drinking water machine in the student area should consider the heating function and water intake design. According to the number of people and user needs, for the office area equipment, the number of machines can be reduced to enhance other functions of the machine (such as heating and cooling, multi-speed function water temperature, etc.) The canteen area should consider the output of water for cooking and the cleaning of machines.