[pct-l] CDC recommendations for water treatment
bill at burge.com
Thu Oct 21 21:03:57 CDT 2010
You need to avoid altering content that you indicate as "transcribing".
The line from your post:
"5) Ultraviolet light treatment of water is not effective against
Cryptosporidium at normally-used levels. i.e. Steri Pen type products."
is NOT the same as what is in the original page:
"Ultraviolet light treatment of water is not effective against Cryptosporidium at normally-used levels."
That is not transcribing. It is "interpretation".
Steripen's site points to a number of independent tests that DO indicate effectiveness against cyryptosporidium.
On Oct 21, 2010, at 6:34 PM, jcil000-pctchat at yahoo.com wrote:
> The following recommendations by the Centers for Disease Control (CDC) are
> useful in
> the avoidance of infection by Cryptosporidium.
> To avoid Crypto infection, they advise the following:
> 1) That the use of water filters which an “absolute one micron” filter, or a
> filter certified to remove Cryptosporidium under NSF International Standard
> #53 or #58 for either “cyst removal” or “cyst reduction” be used. (see A Guide
> to Water Filters for more information.
> 2) That Cryptosporidium is poorly inactivated by chlorine or iodine
> ***The product sold by REI called "Potable Aqua / Chlorine Dioxide Water
> Purification Tablets" claims effectiveness in four hours.
> The down side to this product is that it "causes irreversible eye damage" if the
> user gets residue into his/her eyes.
> 3) That boiling at a rolling boil for 1 minute (at altitudes greater than 6,562
> feet (>2,000 m), boil water for 3 minutes)
> is recommended.
> 4) Cryptosporidium is not killed by alcohol gels and hand sanitizers.
> 5) Ultraviolet light treatment of water is not effective against
> Cryptosporidium at normally-used levels. i.e. Steri Pen type products.
> CDC web links below:
> If I made a mistake in transcribing this information for my hiking friends,
> please post corrections but I think I've summed up their information.
> Also, in closing, the weblink shows wording by manufacturers which might be
> misleading while reading a product label. Be sure to read that
> CDC warning.
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