With populations increasing and economic development taking place in emerging countries, water shortages are now being observed on a global scale, and a solution to this is considered as a very important challenge for the entire world. For the survival of living things on earth, water is an essential. It used to be said in Japan that,“ Water and safety are free,” and that Japanese people did not have to be aware of water issues in their everyday life, but since the 2000’s, water issues have become a regular topic of conversation. In particular, since the METI established the Water Industry and Infrastructure Systems Promotion Office, the water business has become very active in both public and private sectors, which can be considered as a shift of value for water from a public good to an economic good. Based on all of this, to understand the current situation of global water resources I will report my thoughts on （1） marketability of water as a business, （2） business strategies of global companies, and （3） further consideration on business strategies of Japanese companies
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