Description of CHT’s responses to the UN SDGs ・ Our water usage is primarily domestic purpose; apart from water for washing, water for cooling air-conditioning accounts for the majority of water usage. ・ The water resource management nationwide is included in the EARTH system of CHT's own device, as the innovative “water bill management” in the system can achieve a centralized management of water bills and water usage throughout the branches in Taiwan with ease that not only reduces the waste of water bill printing, but also analyzes and controls the consumption of water resource via big data. ・ In Greater China region, was promoted, introducing ISO 14046 water footprint standard and having obtained the assurance statement upon passing the SGS certification. ・ Through the water footprint inventory of the IDC, the water usage and water pollution throughout the life cycle of the IDC are taken into consideration to identif y the environmental risks concerning water resource and as the critical reference to the planning for water management policy and measures in the future.