How much water treatment do you need? Official recommendations suggest that you should store one gallon of water per person per day for emergencies. (1/2 gallon for drinking, 1/4 gallon for cooking/food prep, and 1/4 gallon for sanitation/personal hygiene). This equals about 30 gallons of water per person per month and about 360 gallons of water per person per year. We suggest purchasing whichever PURINIZE Water Treatment + Filter Pack contains enough product to treat water for you and your family for several months or even years. 

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