Unit: ton 721,476 14,087 2015 726,454 4,211* 1,747,038 2014 736,276 17,158 1,830,395 Tap water Air-conditioner water Recycled water 92 Started from 2007, Chunghwa Telecom initiated water conservation measures by including water resources management into EARTH system, while registering centralized water bill payment through EARTH’s “water bill management” function to reduce printing of water bills.