Where does all our poop go?

Quoted: It turns out that the stuff we flush down the toilet is surprisingly useful. A significant portion of flushed poo, in fact, ends up fertilizing crops that we eventually eat, said Daniel Noguera, a civil engineer at the University of Wisconsin-Madison. Some of our poop gets used as fuel, heating the very facilities that process our waste. And the rest eventually reaches landfills. But before the fate of your poop is sealed, a long series of steps ensures it’s free from disease, and safe for farms and waterways.