I guess it has to be said: it is not guaranteed that the water rains in the "right" spots for it to be useful freshwater again anymore. Dumb example: maybe the wind currents mean that the water simply comes back down downstream.

One shouldn't assume that evaporated water comes back into the system in the place you want it to. Water management orgs try to reduce loss from evaporation for a reason!

OK sure but this is like defense in depth. It's a negligible amount of water, most of it doesn't evaporate, and most of what does rains somewhere it's useful anyway. The actual damage here is microscopic.

You're literally on a thread just a comment or two from the water cost of producing ethanol. Why are you still talking about data center water evaporation? This is morally equivalent to worrying about the water consumption of Slip-N-Slides. Everything is a rounding error compared to agricultural misuse of water.

Maybe I was replying to the comment I was replying to and not to the top-level comment.

Don't you have a company to found or run or whatever? What are you doing in here?