siwaaa

i prefer natural water to make tea.

RO is NOT really good for health, but quite common in 3rd world due to water cleaniness. Certain country (Aust, NZ, Japan...) pipe water quality is very good and you can drink it without boilling it. Some countries (Msia/Thai/Spore..) pipe water also quite good, contains rich natural mineral and taste just need a simple filtering will do. For China you can use "农夫山泉“ which is recommended by my 中国环保部 friends.

其实我比较喜欢马来西亚，泰国，新加坡（也是源自大马）的自来水，都是源自热带雨林山泉水，就算是喝白开水味道都很好。泡起茶真的很香。