Thematic Factsheet on Water Scarcity. The world contains an estimated 1 400 million cubic km of water. Only 0.003% of this vast amount, about 45 000 cubic km, are what is called "fresh water resources", i.e. water that can be used for drinking, hygiene, agriculture and industry.
UN Water (2013): Water Scarcity Factsheet. United Nations Water URL [Accessed: 09.04.2019]