[pct-l] Giaridia and treatment

[Shauna]

On Fri, 14 Sep 2007 12:07:39 -0700, Tom Bache <tbache at san.rr.com> had this
to say:

>I bought a Steripen (great product) for those few sketchy situations.  This
>treats  by stirring the water in your bottle with a rod including a UV light
>source.  Seems to me that water that spends time in bright sunlight is
>getting much the same treatment.


Yes studies show that the top two inches of lake water are sterile thanks
to UV rays from the sun.  This counters our common sense beliefs that tell
us fast flowing river water is safest.