<< How does a desert country like Saudi Arabia get it’s water?
I don’t know about their total water supply but a big part of it is from desalinization plants. Not only that I think the technology is Israeli. Saudi has enough water that they can afford to have trucks full of water drive around and water all the plants in the public gardens and along the roads.
Introducing that much moisture into desert conditions might even begin to induce a little more natural rainfall due to evaporative cooling and cloud formation.