Industrial water taps are present in most biology laboratories I have been too. There are accompanied by a sign stating "do not drink". So obviously it is not a good idea to drink it.
However I could not find any information or reference concerning its safety for body use. The only indication I could find is that eye wash stations are using potable water instead of industrial water, suggesting that industrial water is not suitable for eye contact - at least.
My question: is it safe to use industrial water available in labs for hand washing, multiple times per day over the course of several years?
I am looking for a precise answer about the possible long term harm of industrial water in this context, if possible with references.