Here's the definitive writeup on water treatment methods:
Water Disinfection for Travelers
Note that they all have their issues.

Thanks, Rick, for the info on byproducts. We keep being told that chlorine dioxide is harmless (although chlorine bleach we know is not). All I know is, the ClO2-treated water does have a chlorine taste. I take it along only as backup in case my filter gives out. The last time that happened, I forgot the ClO2 tablets, so I spent three days boiling (only had a small kettle) instead of fishing. mad

Iodine writeup will be in a separate thread, in the Backcountry Health and Safety forum, which is probably where this thread belongs.


Edited by OregonMouse (03/28/16 05:56 PM)
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May your trails be crooked, winding, lonesome, dangerous, leading to the most amazing view--E. Abbey