[pct-l] Interesting article on water treatment

[marmot marmot]

An article years ago in backpacker stated that in still water the giardia sank to the bottom or was killed by UV Rays down to a certain depth. Churned up water especially at lake outlets had a higher concentration of the little critters. 
Marmot

Sent from my iPhone

> On Mar 29, 2015, at 9:56 PM, Ron Graybill <rgraybill44 at gmail.com> wrote:
> 
> Another reason--not mentioned in the article--as to why hikers who did
> treat their water actually may have had a slightly higher rate of
> water-born illness is that they are the hikers who would feel safer
> actually trying to purify stagnant water, while hikers who are not treating
> their water would be more likely to use only flowing water.
> 
> Ronald D. Graybill
> 11832 Fordham Place
> Riverside, CA  92505
> rgraybill44 at gmail.com
> 909-910-9339
> 
> On Sun, Mar 29, 2015 at 12:17 PM, Brick Robbins <brick at brickrobbins.com>
> wrote:
> 
>> http://distancehiking.com/tools/watertreatment/
>> 
>> There was no significant difference between groups [that treated or
>> did not treat their water] in the number of people who said they
>> experienced sickness due to trail water.
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