My point is how much water does it take even for that. If what you were saying is true, I'd expect to see that grass growing all over Phoenix and it would be green rather than red.
It does consume water, but again we manage our water well. I think most people are under the mistaken impression that fresh water is in short supply. The problem is that our water supplies could easily be a free market while still being ecologically friendly. They could easily limited to reusable and naturally refreshed sources, and not drain rivers like the Colorado below safe levels. Market prices would ensure water was used efficiently.
But instead California gave away massive free water rights to landowners who use it to farm in their deserts. Over 90% of their fresh water is given to farmers to grow crops a little cheaper than farmers in other states who aren't raping water supplies, and so bad farming and water usage drives out good.
My point is how much water does it take even for that. If what you were saying is true, I'd expect to see that grass growing all over Phoenix and it would be green rather than red.