I am one of the "Dip and Sip" people. Based on this info, I think I'd refrain from doing that in the streams coming out of the drainage.
I think I might still use the water coming
INto the Trail Camp area, and the water at about Switchback 25, since they both come from untraveled areas above Trail Camp.
But dip-and-sip is definitely a personal choice.
If the Sawyer mini is supposed to filter E.coli:
"
The MINI removes 99.99999% of all bacteria, such as salmonella, cholera, leptospirosis, and E.coli; removes 99.9999% of all protozoa, such as giardia and cryptosporidium"
(link)Using the filter for this situation is exactly why you are carrying it.
