Water faucets here don’t seem to have regulators for the hot water. I’ve burned my hands and body more than once.
Also, public bathrooms always seem to have only cold water. And 90% of girls I come across either don’t wash their hands or only rinse them quickly. (pet peeve…don’t get me sick during finals.)
And Dutch people (students) fill up their water bottles from bathroom sinks. I’ve never tasted the water. I’m sure it’s fine. But from a public bathroom is a bit much for me.