You KNOW that some enviroleftist will find something wrong with desalinating sea water for human use...
You may not be aware that some years ago (in the 80s IIRC) an entrepreneur attempted to set up a hatchery for - I think - sea cucumbers, or abalone, or some sea creature that had become a delicacy in San Francisco and surrounding hoity-toity regions.
He set up some big tanks on land, arranged pumping apparatus to convey seawater through pipes from the ocean up to his tanks, with other pipes so arranged as to convey water from the tanks back to the ocean. In this way, he attempted to create in big plastic vessels the selfsame environment the aforementioned critters had become used to in their millions of years of patient evolution in the ocean deeps.
Soon after he stocked his tanks with sea cucumbers, he was cited by several government agencies including the federal Environmental Protection Agency and instructed to cease operation immediately. The reason given was this: the discharge water from his tanks was polluting the seven seas, even though the only conceivable source of any pollution was the sea cucumbers themselves.
He tried to explain this, but to no avail. Bye bye hatchery, jobs, and economic activity from the California Land of Opportunity.