Honestly we should probably start building desalination facilities statewide so that we can begin to supplant the natural supply. The one being built in San Diego is a few months away from coming online and it will be providing 33% of the city's water supply iirc.
I know people have talked about it in the past, but usually the response is "but they are an eye sore if I go to the beach." Well, what would you rather do? die of starvation and dehydration or have a desalination plant near your beach?
The waste brine water is pretty toxic to the environment. Nobody believes that this will cause people to die of dehydration. Worst case scenario, if you look beyond the severe inconvenience factor of having to regulate when you can water your lawn, or if you can fill your pool, lots of farmers would lose their jobs. Almonds and rice won't be able to continue under these conditions. Beyond that, there is plenty of water to go around to keep people hydrated.
I know people have talked about it in the past, but usually the response is "but they are an eye sore if I go to the beach." Well, what would you rather do? die of starvation and dehydration or have a desalination plant near your beach?