To build a factory from scratch you must first invent the universe

yeah I mean this isn't factorio...

AFAIK TSMC does not manufacture the machines they use to create processors so in any case they would be moving the equipment into a facility.

Yes, ~10 million gallons per day (equivalent to 33,000 households). But the plant's water recycling and re-use is very efficient, so it's mostly a one-time hit up front.

From what I read the overriding factor was geological stability. Apparently these factories are very sensitive to vibrations. I guess when you do precision work at nanometer scale these things matter.

Arizona isn't water rich, but it manages to keep the 4 million people around Phoenix hydrated, so there is water.

Arizona actually has a lot of water because of several successful and ambitious irrigation projects in the last century.

So much so, that it has become an agricultural region for growing notoriously water intensive crops like alfalfa and pistachios.