Israel had a drought 15 years ago so they went very strong into building desalinization plants on the Mediterranean. They are the world’s low cost leader on this technology. That they have greatly advanced.
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Israel has emerged as a global cost leader in desalination technology:
The cost of desalinated water in Israel has dropped significantly, from about $0.75 per cubic meter in 2012 to $0.41 per cubic meter in 20229......cubic meter=264 gallons water
The Sorek B plant, currently under construction, is contracted to produce water for $0.41 per cubic meter, setting a new global benchmark for seawater desalination
I know. Israel now has a surplus of water. They have been refilling the aquifers in the hills, refilling the lakes, and are even bringing the Jordan river back up to historic levels ( for that and the dead sea they add minerals and brine to keep the salinity in balance so as to not disrupt nature). They supply the Palestinians with water and export it to Jordan and other countries as well. They have several generations of advanced technologies.
California is idiotic. The coastal commission has a very odd set of priorities and are politically motivated; recently refusing SpaceX new launch sites for western facing launches simply because of Musk’s change in politics and X policies. They have refused new desalination plants permits and the legislature doesn’t allocate funds or override them; instead issuing electric mandates without enough energy to make it workable and all sorts of virtue signaling nonsense which wouldn’t matter IF they actually could deliver cheap water, cheap energy and lower crime and homelessness. But they don’t do those most basic of needs. And of course, not enough water we even ration water to farms. California feeds a lot of the country, but the politicians are so petty and ignorant they can taste their own hair gel if you catch my drift.