I am one. Ok, I treated with chlorine one time. Sunrise Creek, August 2014, in deference to the still water and dead fish lying around. After that though, I got a kick out of the Boy Scouts who watched in horror as I dipped and sipped from Duck Creek, and then at Purple Lake offered to go for help when they found me snoozing by the outlet. No thanks, I said as I dipped again and offered them my water bottle. Didn't see em after that. I think they bailed due to protein deficiency from relying on filtered water.