The one where the businessman drinks sewage to save the world

Christopher Beth never imagined drinking raw sewage. But that's where he found himself after making a radical decision. He left a successful business consulting career after visiting the Amazon in order to pursue the daunting task of brining the world clean water and a message of hope. He details how he ended up finding a small filter that can give a family a lifetime of clean drinking water, why he decided to do it, and what others told him when he made it his life goal. He also explains how he "tests" his filters, and it involves some really nasty water.