Then I started reading on these forums about how overblown the water filter business was. Made sense.
I am fearful of giardia (because I had it, so it isn't extremely unlikely to ingest those critters in the High Sierra).
Fish-Man! With testimonials galore assuring us of the Shan-gri-la status of Sierra Water, one is lead to wonder:
Just what crime against the Mountain Gods did you commit???!?!? 
