I'd hate to see someone hurt too. A qualified person is supposed to be aware of all the hazards. I would think that a qualified person would normally expect "water" as we normally find it is a conductor. Unqualified persons should keep their hands in their pockets.

Water being a non-conductor is a factual statement. You just have to watch out for the exceptions. Just like the NEC.

Few things are harder to put up with than the annoyance of a good example.