opinions but zero scientific research to back them up and I would never suggest anyone else should alter their conduct based on my opinions. It would be good if there were some studies done. But, in the meantime, I am keeping my opinions to myself. Suffice it to say, I have been at this for 40 years, my experience is all in the northern united states and northern canada. I have never filtered, boiled or otherwise treated water. I have never been sick as a result of water consumed on a trip. I have been sick from other causes.
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