Safe Drinking Water: Chlorine Dioxide

Don't touch that stream water until you've used at least one of these methods

Aug 29, 2013
Outside Magazine
safe drinking water camping wilderness hiking water treatment boiling chlorine dioxide


How it works: A chemical used in many public water supplies, chlorine dioxide breaks down cell walls to kill pathogens

Pros: Like iodine, it’s cheap and easy to carry, with no taste—or just a vague chlorine taste. Chlorine dioxide can also improve the taste of water by breaking down odor-causing bacteria.

Cons: Wait time. Chlorine dioxide can work in 15 minutes, or it can take up to four hours if your water is murky or extremely cold. And, organic matter needs to be removed separately.

What you need: Aqua Mira makes two versions of this water treatment—a liquid and tablets.