It's hit and miss, or wait - it's too easy, "dip and miss."
From one punnist anon: The collective groan of the online community crescendoes
I'm in agreement w/ SierraNevada. I usually carry enough water to get me to the top (3-5L)and then I fill up near SB 23 or the gully below Discovery Pinnacle around SB 10 or so.
Even up there I'm slightly leery, many times i have found various articles of clothing (numerous boxers and other undergarments)drying in the sun, as well as the Final Solution WAG-Bags baking like a foul pressure-cookers in the high-altitude sun.
I believe that someone else said it, the usual culprit for water contaminants is when people don't wash their hands after going to the bathroom, and subsequently fill their water bottles with their filthy mitts.
