Yes, and by asking people to get vaccinated more than 50% of the population did it.

Lets not start pretending that fascism is the only viable path simply because they are the only ones who achieve 100% compliance through killing everyone who steps out of line.

He doesn't necessarily have the legal authority to require anyone to reduce their water usage without additional legislation, so he's doing what he can do and asking. That seems like a rational thing for him to do in my mind. Do you not think so?