Don't forget SOCAL. In some ways they are worse off than AZ and NV. Many years ago after a drought CA AZ and NV got together to plan water use for the future. Only AZ and NV took legislative and regulatory action based on those meetings. Sacramento, being in NOCAL, and, well, being the CA assembly, did nothing. That is in part why you see bans on certain water use in CA and not AZ and NV. It isn't because they are taking it more serious than NV. It is because it is more serious.
I’m confused. I’m fairly certain water use enforcement is significant in all those states. Like water cops in Nevada significant.