It will only get worse for the next generation as the aquafers are continuing to be depleted.
we live in a closed greenhouse system, the water just doesn't just disappear and most of the Earth is covered in it. Plenty of countries completely rely on desalination already, I think we'll be fine. I'm much more concerned about everyone becoming a moron from using AI. edit: cloud seeding too.
There are only 3 countries that do: Bahamas, Maldives, and Malta.
Other countries that depend heavily, but not completely: Qatar, Kuwait, UAE.