“Emergency Water Storage,” Ensign, Aug. 2006, 71
Do you have enough water stored for your family in the event of an emergency? If so, is it stored properly? Adults need to drink at least two quarts of water each day. Children, nursing mothers, and ill people may need more. Additional water is needed for food preparation and hygiene—for a total of one gallon per adult per day. The Church recommends storing a two-week supply as a minimum. For an adult, that’s 14 gallons (53 liters).
According to providentliving.org, water storage containers should be thoroughly washed and should be airtight and resistant to breakage. Plastic soda bottles are commonly used. If the water has been treated with chlorine by a water utility, you do not need to add anything before storing it. If the water is not chlorinated and is clear, add eight drops of household bleach (5 percent sodium hypochlorite) per gallon. If the water is not chlorinated and is cloudy, add 16 drops per gallon. Seal the containers tightly, date them, and store them in a cool, dark place. Since many containers are clear, and light can permeate them, you may want to cover them or store them in dark plastic bags. Replace water every six months.
Other water sources in your home include the water heater and water remaining in the pipes, but in the event of contamination, this water would need to be purified. Having ready, potable water available for immediate use is one of the most important ways to help your family be prepared for an emergency.