There are existed systems that can solve an issue of water shortage in Qatar and places like this. It costs not much and doesn't require much investments into it. I am talking about Rainmaker WWI technology. There are two units that can make water for human consumption and not only. For costline territories it can be Water to Water system that is powered with solar/wind or grid connection and one unit produces up to 150,000 l/d of fresh water out of the salt water. Or inland territories can adopt Air to Water system where the same source of energy can make the unit produce up to 20,000 l/d of fresh water out of the air. Through condensation method. To learn more about it rainmakerww.com