The Crazy Russian Hacker decided to open these cans for a taste test after 60 years. Do you think they're safe to drink?
In the case of this water, he subjects it to some quality tests first before a final taste test.
Other than a little bit of a "stale taste," it appears these cans are still good to go all these years later. This obviously shouldn't be your first choice of water in an emergency, but if there is nothing else, stale water is better than none at all.
It really is interesting to see how these Cold War era relics held up all these years later. It just goes to show they really knew what they were doing when they prepped these supplies!