Violent Hippie
WKR
Just spent 5 days in the Colorado Wilderness drinking water from sources containing beaver and or cow shit. Pretty gross water 100 % of the time. I even drank some water that I later found to be below a half decomposed moo cow. I used the steripen for the first time in place of my usual sweetwater filter and must say I am a convert. Its been close to 2 weeks and no issues. I did not use a prefilter or any other set up. I give it a thumbs up.