@Kodi California is a shining beacon that liberalism is not leftism. California is a blue state, yeah, but that's because the Democrats are a right-leaning liberal party. It's basically a neoliberal hellscape here.
That said, here comes the insufferable part where I defend California at least a little bit. Desalination is not a great way to generate water. It's incredibly energy intensive, the brine it produces is terrible for the environment, and it doesn't scale well, so you'd end up burning more fuel to produce water that makes less of a dent than other water preserving methods California is actually implementing. California is requiring new agricultural methods to replace flood irrigation, infrastructure to refill underground aquifers with winter snow melt, wastewater recycling, rebates for removing turf, covering canals with solar panels to generate electricity and prevent evaporation, etc. They recently passed an $8.7 billion dollar bill to reduce wasted water in the California water supply.
The biggest problem California faces in funding infrastructure and reducing costs is that California pays the highest proportion of taxes to the federal government compared to the little it gets back. The tax deficit is actually insane. California is being bled dry by red states that cut their own taxes then expect the federal government to bail them out with California's money.
As for the oil fields, meh. I dunno if that makes California any less progressive. Norway is a petrostate just as much as any country in the middle east, but I wouldn't call Norway a conservative country.
To be clear, my defenses of California here does not make it a progressive state. It is a neoliberal state that regularly fails to make any meaningful social reforms that'd drastically improve the lives of the people living here. California needs massive redevelopment to drastically increase its housing stock and access to public transportation, but thus far it's only making very meager steps in that direction. The power to implement restrictive zoning needs to be stripped from municipalities and the people who live there and the state needs to assume much more power to spur on low-cost housing. That'll probably never happen.