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PostPosted: September 15th, 2018, 7:27 pm 
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Location: Rattlesnake Pond ME
sk8r wrote:
littleredcanoe wrote:
The chemical treatment mentioned in a post above requires a four hour set time.....



That is an absolutely worst-case scenario. I have never used water so murky & "dirty" that I have needed anything like 4 hours. Nowhere near.


Image


I believe you but I also believe animal poop does not make a river dirty and murky.. The Current is crystal clear. It's also got a huge population of wild horses..
E coli is no ones friend. Its also probably the most prevalent source of "giardia"


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PostPosted: September 16th, 2018, 8:11 am 
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Ok, we all need to be situationally aware out there. But, that said, if you actually look at those instructions I posted... E Coli... 15 minutes.. Giardia, clear water, 30 minutes. I don't know where your bias comes from - doesn't matter - but I think it's important to use the facts with these things and not just a belief factor. :)

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PostPosted: September 17th, 2018, 8:37 am 
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Yury wrote:
Splake wrote:
In practice, filtering is fine for everything but viruses and viruses are not considered a risk factor in Canada.

Why is this not a risk?
Do not they have humans with hepatitis hiking/canoeing and pooping up there?


Fair question and most likely a big reason why the workplace safety training for the MNR requires both filtering and chemical treatment.

It's been a while since I researched water treatments in detail. At the time the contrast was between tropical, warm water, higher population density, potentially much lower sanitation and waste water treatment standards versus temperate, cool or cold water, lower population density and generally higher sanitation and was water treatment standards.

That said, you may have noted that my default water treatment is a chemical treatment with Pristine.

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PostPosted: September 17th, 2018, 2:59 pm 
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Location: North Bay, Ontario, Canada
our main concerns in Canada tend to be Giardia and Cryptosporidium:

so, therefore, from the chart above you are looking at 30 minutes minimum.

As the water gets colder the longer the wait time.

The dirtier the water the longer the wait time.


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PostPosted: September 20th, 2018, 12:35 pm 
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Joined: January 27th, 2006, 4:32 pm
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Location: Kitchener, Ontario, Canada
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recommend the MSR filter over platypus. The Bag is more durable.


Agreed. The MSR gravity filter is all I use now, in all waters. I have used the equivalent Platapus, and it is not as durable. Durability is the MSR hallmark.

Took me a while to trust these gravity filters (over a pump), but after 8 trips a year for many years, no one was gotten sick.

For Ontario lakes, no need to worry where you get the water from... if you are worried, use the canoe to fill the bag out from shore a bit, but I don't even bother with that any more.

I have also used the MSR pump, pills, and UV pen (for hiking trips, lighter). Pills are my least favorite... there are risks, if you use them incorrectly.

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