There are lots of home owners in AZ that rely on hauled water., even fill swimming pools. I think that those with swimming pools usually have some water from a well, but not enough to support a household.
I haul my own here.
Some Californian bought the out local guy who hauled for us and she tripled the price per load. She thought she was really the limit and now has trucks sitting with nothing to do.
Have a couple friends in AZ with wells & they’re from Nebraska & they talk about the poor quality of the AZ water. I believe it even contains low levels of arsenic.