Think about it. How much drinkable good water would we save in America if we all peed outside. I haven't come up with a formula yet. I don't mean standing on the front porch at noon and letting it go but privacy enclosures could be built. There must be close to five gallons in a toilet tank. So each person flushes maybe 5 times a day times how many people in the USA? Las Vagas has made a lot of progress in water saving over the last few years.