Ah .... NO! City dwellers would starve themselves if that idea prevailed. At least where I live, farmers own water rights. If we did not, then most of the water would have been moved to a big urban area by pipeline through elections. 98% of this country depends on <2% of the population to feed them. The efficient use of water works when there is ownership. It does NOT work when governments control it. But their cars would be clean and lawns watered.