Question

Why is drinking water not evenly distributed throughout the world 

Answer 1

Water is unevenly distributed around the world. ... Over time, there will be less water per person within many river basins as the population grows and global temperatures increase so that some water sources are lost. Over time, many nations, even developed nations, are projected to have less water per person than now.

Answer 2

The world's available freshwater supply is not evenly distributed throughout the world, due to wide variations in seasonal and annual precipitation. ... Many developing countries can use no more than 20% of their potentially available freshwater resources, because of the seasonal nature of water supply