The hard facts are that conditions of living in the desert are different than the conditions of living in the Midwest. Concessions must be made for an unusual environment, an environment that has little water, water resources that are being over-used.
As a point of reference, the Ogalalla Aquifer in the Midwest forces water upward to within 2 ft. of the surface. It is one of the key reasons for the veto of the Keystone Pipeline and a resource that distinguishes the Midwest environment from that of the Southwest.
A common response from residents of Arizona or otherwise in the Southwest takes the tenor of the following conversation:
Yikes! Thanks for speaking up on this, Katie! Just the idea of looking at water as a COMMODITY scares the beejeezus out of me... and i agree, taxing the shit out of those of us who have gardens just seems so wrong. I agree that wasting water is bad, and i try to collect rainwater to water my garden, but for fruit trees and other trees, there's usually not enough. This is a huge issue. Clarkdale doesn't want anybody to water anything so they can continue to grow their population....In other words, "C'mon, guys, all I want are a few fruit trees. It's not so bad...I use rainwater for other plants."
From a current column "This Tribal Nation" by Paul Krugman in the NY Times:
". . . having a college degree didn’t appear to make one any more open to what scientists have to say. On the contrary, better-educated were more skeptical of modern climate science than their less educated brethren."
Our "Yikes!" comment continues. . . for "those who can afford to continue watering, the price of water won't matter. So once again, the poorer will suffer... the rich will have their lawns and pools, the poor will be robbed of growing decent food. And yes, there are just too damn many people already for sustainability."
Water issues are not social issues, hobby farms and ranches excluded. The availability of water for non-essential uses simply subtracts from the amount that will be needed for essential ones in the future.