I wanted to clear up a few things about what I had said in a previous podcast about water filters. And as this is not about just one man’s opinion, I wanted to get Greg’s input on this, as he also has had field experience with water filters.
It’s important to note that viruses aren’t generally the concern for water sources in North America. If you’re traveling abroad, you need to be very concerned with them, but they’re not typically a concern in the US.
An excellent article from REI on choosing a water treatment system: http://www.rei.com/expertadvice/articles/water+treatment+backcountry.html