In this area, homes get water through private wells, shared wells, or water companies.
You might also call Water Utilities of Greater Tonopah. 623.386.4252 for more information.
If you are told that you need to haul water, there may be a problem with the well, the share well system, or the home does not have a permit. I would avoid it.
If a home does not have a running water source you won't get a loan on it.
I suggest that you find a good real estate agent that works that area and is not affiliated with the seller.
Shared water wells can be legally problematic. Consider seeking legal advice to be sure you have water and a way to keep the shared equipment maintained. Inquire about the water quality and what test are required by the State.