Originally Posted By Rick_D
Iodine isn't the best chemical treatment for biological contamination; chlorine dioxide is considerably more effective. The place I'd start, in any case, is first determining what contamination is in the water, then matching it with the best treatment, whether chemical, filtration, UV, etc.


Any tips on which brands are most trusted/safest? Coghlan's, Micropur, etc.? Our city's raw water supply tests negative for giardia and cryptosporidium, but that doesn't mean it's absent where I'll be hiking. And, or course, E. Coli is always a concern.
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