Could a distributed desalination system work. Portable marine desalination units. Looking at first unit I could find with google. The Rainman Portable Desalination. It does not look so big.
Since portable solar panels made a bigger difference to people lives than big solar farms. I wonder if the same could be true for water.
So the idea is for central water and distributed water to work together.
Everyone needs to have a portable desalination device and the needed solar panels.