Answer: 1.2%
Step-by-step explanation:
Even thought it seems like there is plenty of surface water on Earth, it is vastly below the quantity that exists in the oceans. which comprise of about 96.5% of the entire global water quantity.
When it comes to freshwater, most of it is locked up in ice caps and glaciers with only 1.2% coming from rivers, lakes and ground ice. If humans can find an efficient way to desalinize ocean water, we would not have to worry about water supply for eons.