i remember reading a few years ago that in california they were purifying the water from the sewer system, and it came out clean enough for them to drink, there was some concern about all the drugs being flushed down the toilets, like viragra and the like, it was showing up even in the ground water. one wonders what is going to happen when they all get enough viagra in their systems, sounds like too wild a party for me, think i will stay up here.