WJ dispensers...yes...bathroom tap...no way.
Yums...you would not have wanted to drink some of the bathroom tap water we have witnessed at times. 😝 And I have had "just a few" cruises from RCI over the years myself. 😉
Came out brown, with an awful smell, and disgusting at times. Then there are the times they are flushing the lines with a lot of chlorine...was not difficult to smell what they were doing to kill that crap.
I used to refill at the bathroom tap myself, many years ago, but after too may gross experiences with the bathroom tap water...no way. If I am going to refill my water bottle, I will hit one of the filtered water dispensers, yes as in the WJ (always using a disposable cup to transfer to my bottle).