It's the question that's baffled every four-year-old in America. Where does the water go when you flush the toilet? Now, thanks to this map from the environmental health organization Habitat Map, you can find out the answer. The map breaks down the city into color-coded "sewagesheds," allowing New Yorkers can figure out if their toilets contribute to the stench that has long plagued sections of Brooklyn near the Owls Head Wastewater Treatment Plant, or if heavy rains cause their flushes to become a part of the 586 million gallons of raw sewage poured into Newtown Creek annually, or the 1.43 billion gallons dumped into the waters off of Astoria every year. It's also the perfect complement to this map of New York City public toilets.