Desalination works in some places but is a high energy technology plus wherever the minerals removed from the salt water goes changes that environment permanently and adversely. My opinion is repairing all infrastructure leaks, water meters on every home so people can be aware of invisible leakage and be charged accordingly for their use, and government getting the balls to charge the appropriate increase in rates so they’ll have the funds to create infrastructure for the future. And of course no more watering lawns and ornamental plants.