In order to save money, so that rich people can get their special tax breaks, George W. Bush has decided that it's most effiecient to let big loads of shit flow out into America's supplies of drinking water every now and then. He has actually ordered the Environmental Protection Agency to allow for the mixing of shit into America's public sources of drinking water. Bush and his friends call this process "blending".
http://irregulartimes.com/drinkshit.html