Bring water to a rolling boil for 10 minutes, keeping in mind that some water will evaporate. Let the water cool before drinking. Boiled water will taste better if you put oxygen back into it by pouring it between two containers. This will also improve the taste of stored water. Add a pinch of salt for taste.
Chlorination uses liquid chlorine bleach to kill microorganisms.
Use liquid bleach that contains 5.25 percent sodium hypochlorite and no soap. If the water does not taste and smell of chlorine at that point, add another dose and let stand another 15 minutes. Place bleach in the spoon and carefully tip it. Drops the size of those from a medicine dropper will drop off the end of the strip. Purification tablets release chlorine or iodine.