[gregmac]

The test would be finding a spot where a witcher says there isn't water, and then drilling there.

There's water almost everywhere in the ground -- the questions are is there enough of it to meet the need? is it usable (ie: not contaminated with salt or toxic chemicals)?

[gallamine]

> There's water almost everywhere in the ground

In Arizona?

[kip_]

https://new.azwater.gov/aaws/maps-resources will give you a good idea of how far down wells have to go in various areas of Arizona.

[kip_]

Particularly https://azwatermaps.azwater.gov/gwsiweb/

[soperj]

Yes.