Also those of us living near sea water would find a solar distiller possibly helpful.
The reverse osmosis system is what ships use, they can be expensive and require power to operate that may not be available in an emergency.
I saw this one water purifier that is used in the 3rd world, you have to burn fuel, but according to the video, it is extremely efficient. But it didn’t distill, so no good for sea water.
I’ll have to go back and look for it.