I was running a Mork Borg session once and the pc's came across a fountain in the middle of a cave. It was a pretty dirty cave, as is all of MB, but this fountain was just a clean, fresh, cool water source. It was like 10 or 15 irl minutes of debate and thought. I had one roll a random die and that triggered one players dog to drink from it. It was fine. They refilled their waterskins and one even washed their feet. It gets mentioned everytime there's an odd thing in a setting now.