An average adult is required to drink 1,500 ml to 2,000 ml of water per day. However, according to WTO, over 600 million people lack clean drinking water source. Besides, the spread of the pandemic and the flood and drought caused by climate change definitely brought the safety of drinking water to people's attention. Market Research Future Report (MRFR) pointed out that the global water purifier market will reach a compound annual growth rate of 9.55% from 2018 to 2025 and is estimated to reach 110 billion U.S. dollars by 2025. Furthermore, to make water drinking more interesting, healthier, safer, more sophisticated, and personalized drinking options are also available. Water infused with minerals, vitamins or carbon dioxide gas or producing “Functional Water” are new and beneficial choices to quench the thirst and provide necessary nutrients to consumers.