There's a bootstrap problem to be solved. If you want water, you need ground-covering plants, which need moist loamy soil, which needs water, and so on. For any of this to work you need to start by turning as much grassland as you can get into pasture (with irrigation, sadly, which needs water) and grazing it with livestock, and then kind of building that out over time.
Monoculture arable farming makes deserts. You need to stop doing that.
Having no residential water restriction certainly doesn't help voters understand that water availability is a problem.
People have limited ceilings for these types of things. Of anything you need to have at least equal measure measure, but preferably greater measure of industrial controls on scarce resource consumption.