Water Purification with Clorox, what Clorox corp says, 2002
http://www.clorox.com/health/disaster/disaster5.html
 
How to Purify Drinking Water 
Boiling Method: 

Boiling is the preferred way to purify water. Bring water to a rolling
boil for 3-5 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 the water back and forth between two clean containers. This
will also improve the taste of stored water.

Bleach Method: 

When boiling water is not possible, filter water, letting particles
settle out. Pour off clear water. Add regular household liquid bleach
(5.25% sodium hypochlorite, such as Clorox bleach -- not scented or
colorsafe), as follows:

4 drops regular liquid bleach per quart of water 
16 drops regular liquid bleach per gallon of water 
1 teaspoon regular liquid bleach per 5 gallons of water 
Mix well; wait 30 minutes.Water should have a slight bleach odor. If
not, repeat and wait 15 more minutes. 

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