Water is a locally isolated resource, but again these guys aren't dumb. Nearly all of the water impacts from data centers that I have seen in the news are imaginary. Most actual large-scale facilities have been built in places where water is so abundant it constitutes a natural hazard. In other places, the data centers exist alongside other much larger water consumers, which in my mind tends to absolve them. For example, one of the most objectionable (IMHO) data center sites is Phoenix, but all of the data centers in the area use something like 1% of the water evaporated by the local nuclear power station, not to mention golf courses and agriculture, so it seems weird to complain about the data centers.