Clorox doesn't share the info any more, but here is a "reprint" of the Clorox instructions for water: Clorox Bleach for Emergency Water Purification
*Ratio of Clorox Bleach to Water for Purification
2 drops of Regular Clorox Bleach per quart of water
8 drops of Regular Clorox Bleach per gallon of water
1/2 teaspoon Regular Clorox Bleach per five gallons of water
If water is cloudy, double the recommended dosages of Clorox Bleach.
10% bleach in water is also a great, cheap immediate
disinfectant for hard surfaces.