Iodine

Iodine for purifying water may be bought in solution, crystallized, or in tablet form.

Iodine for purifying water may be bought in solution, crystallized, or in tablet form. Added to water, it kills many, but not all, of the common pathogens present in fresh water sources such as rivers, lakes, and streams. Iodine is lightweight and convenient to take on a trip, but it is not a complete solution for ensuring safe drinking water in the field.

Tincture of iodine: Add 5 drops of 2 percent United States Pharmacopeia (U.S.P.) common household tincture of iodine to each quart of water to be treated. If the water is cloudy, add 10 drops. Let the solution stand for at least 30 minutes.

Iodine tablets: Iodine tablets with the correct dosage for disinfecting drinking water can be purchased at drugstores and sporting goods stores. Be sure to follow the directions for their use. When directions are not available, use one tablet per quart of water.

Shop for home water products | All articles | TOS and Disclaimer

Guides: Kitchens and sinks | Backyard pools | Home upgrades