Water Supply for Cooling

High-tier data centres may consider adopting water-cooled air-conditioning system, which is more energy efficient then air-cooled system, for data centre cooling purposes. In Hong Kong, the authority of approval for fresh water supply for cooling purpose for non-domestic buildings within designated areas under the Government's voluntary Fresh Water Cooling Towers (FWCT) Scheme for Air Conditioning Systems (the Scheme) administered by the Electrical and Mechanical Services Department (EMSD) falls under the Water Supplies Department (WSD). For details, please refer to Fresh Water Cooling Towers Scheme.