[bwteim]

I think that is per quart.
http://extension.usu.edu/publica/foodpubs/watersto.htm


"Chlorine Treatment: Liquid chlorine bleach can be used to disinfect water for long-term storage. One gallon can be treated by the addition of ¼ teaspoon of liquid chlorine bleach containing 4 to 6 percent sodium hypochlorite. (Most bleaches contain 5.25 percent.) This is equivalent to 16 drops of liquid chlorine bleach."

[r9etb]

Excellent information. Thanks for the correction.