The water from the walls? I think so, but I've never really used them too much. It was quite a shock trying to learn how when I came to Luceti.

[He slipped his obi off, folding it up and putting it in the changing basket. Next went his haori, kimono and underthings, and then he wrapped his lower half in a towel, taking a small shallow round wooden bucket filled with soap, shampoo and his hair pin from his things.]

I'm ready when you are.