Pool water, in which several sisters and one unnamed brother have confessed to peeing in last summer. ewww.
Now I know why I felt the urge to not swim with  little siblings, other than the fact that they insist on piggyback rides and hair pulling. I will miss coming home from working all day in a hot, dusty factory and climbing into the frigid pool. But this recent revelation makes it okay, not to need a swim... I will just run through the sprinkler.