And from there, you KNOW that it sometimes ends up in someone’s drinking water. So you could argue that people drink poopy, urine-y water right now. It’s actually not that dangerous; there’s a study out that says that cleaned toilet water is healthier than wild “fresh” water.
Since it’s already happening by accident, the US National Research Council is saying that it’s time to just treat our toilet flushings and re-use them in the same city the water started in. No more dumping it downstream; just drink it!
So yeah, in a way you’d be drinking your own pee. But isn’t that better than drinking someone else’s? (Via io9 article.)