^ Nope, true fact. Read up on J.K. Rowling's gradual descent into insanity, if you haven't already. It's some top-tier drama (unless you had any attachment to the books as a kid, in which case it'd just be kinda depressing). Afaik, she specified that wizards only started using toilets recently, which is why you see 'em in the series, but went with the open-defecation-into-a-black-hole route for most of wizarding history.