https://en.wikipedia.org/wiki/Drinking_waterDrinking water, also known as potable water or improved drinking water, is water safe enough for drinking and food preparation. Globally, in 2012, 89% of people had access to water suitable for drinking. Nearly 4 billion had access to tap water while another 2.3 billion had access to wells or public taps. Yet 1.8 billion people still use an unsafe drinking water source which may be contaminated by feces.
SunToWater Technologies's units turn moisture in the air into drinkable water
http://suntowater.com/In the blackland prairie of Texas, an ocean is thousands of miles away. But Benjamin Blumenthal, co-founder and chief executive officer of SunToWater Technologies, says we're all standing under the sixth ocean -- the one that's above our heads.
The Carrollton startup makes an appliance that unlocks that water supply. The company's water generators -- each about the size of a central air conditioning unit -- use air, salt and solar power to produce gallons of drinkable water. They could bring water to rural communities without a municipal water supply, regions stricken by drought or developing countries with water contamination.
They weren't the first though
I've often wonder about catching cloud moisture on screens placed in the hills or mountains where clouds form, e.g., along the west coast (marine layer), or using sunlight to evaporate seawater which is then condensed, as opposed to using fossil fuel as a thermal energy source.
Desalination is a big industry in the Middle East.