“And just where would that be?”
How about the Prescott area? We have the Big Chino Aquifer, which has barely been tapped. Last estimate it could supply 200 years of water for 200,000 people at current water usage.
The Prescott area draws no water from the Colorado River.
Seem to recall a bit of information about a community just outside Prescott that has serious water problems.
I believe that was reported just last year.