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[pct-l] (Guest Post) Water Treatment - Clorox
- Subject: [pct-l] (Guest Post) Water Treatment - Clorox
- From: firstname.lastname@example.org (Ginny & Jim Owen)
- Date: Mon, 18 Feb 2002 15:03:23 -0500
d-low <email@example.com> wrote:
>I used chlorox bleach this past summer for all water treated on a 39 day
>trek of the Colorado Trail. I ened up with a case of giardia at the very
>end of the trek. The chlorox treatment may have failed due to either a
>poor choice of campspot which resulted in nearly everything I owned
>freezing (bleach fails when the water is very cold), or strange mineral
>content altering the PH of some streams I drank from as a result of old
>mine run off.
A couple things to think about -
1/ according to the Colorado agency that monitors water sources (I've
forgotten the alphabet mix for it), all backcountry water sources in
Colorado are contaminated.
2/ it's my understanding that bleach (certainly in the concentrations used
by thruhikers) doesn't kill giardia under any circumstances. I've seen a lot
of opinions, but no evidence to the contrary.
>I didn't get giardia until i was nearly finished with the
>hike, and at the begining of the hike I was forced to drink from many
>cow contaminated streams, and due to not coming down with giardia sooner in
>the hike, I felt bleach worked.
3/ Do you remember that the incubation period for giardia is 1 - 2 weeks?
You got it long before you thought you did.
>I have never had an issue with the
>tast of chlorox bleach. However, I'm going to try Aqua Mira for water
>treatment on the PCT this year. Aqua Mira and some brief info about
>water treatment can be found at www.thru-hiker.com.[/url]
>Also check out the giardia fact sheet at the cdc web site:
Good site but it doesn't give the info that's needed for backcountry use.
Given the facts you presented (that you got giardia - regardless of the
circumstances?), the bottom line is - the Clorox failed. As it has at other
times and places for other people. Which is why I don't use it.
Good luck with the Aqua Mira - let us know how it goes.
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