https://phys.org/news/2018-07-harvest-air.html

Many parts of the world, such as the sub-Saharan countries of Africa, have little or no access to surface water or ground-water supplies and often have to rely on the transportation of fresh water over long distances, which is costly and inefficient.

Yet even in the driest desert regions there is an abundance of water in the atmosphere, consisting of water vapor and water droplets. The atmosphere has been estimated to contain as much as six times more water as all the rivers on Earth and around 10 percent of all the fresh water in lakes.