Use all available CA law enforcement under your command to go and turn the water on--by force if necessary
Dare the Feds to do something about it
Cause a 10th Amendment confrontation which could start a movement across the US...
Hear, hear!
There was a Fed/State showdown in the 1970’s in Louisiana. The Feds were determined that three senior year cheerleaders be bussed to an inner city school for their last year of school instead of attending their neighborhood school. The Feds won.