Allow people to drink according to their needs. Many people need
even more than the average of one-half gallon,per day. The individual
amount needed depends on age, physical activity, physical condition,
and time of year.
Never ration water unless ordered to do so by authorities. Drink
the amount you need today and try to find more for tomorrow. Under
no circumstances should a person drink less than one quart (four
cups) of water each day. You can minimize the amount of water your
body needs by reducing activity and staying cool.
Drink water that you know is not contaminated first. If necessary,
suspicious water, such as cloudy water from regular faucets or water
from streams or ponds, can be used after it has been treated. If
water treatment is not possible, put off drinking suspicious water
as long as possible, but do not become dehydrated.
If a disaster catches you without a stored supply of clean water,
you can use the water in your hot-water tank, pipes and ice cubes.
As a last resort, you can use water in the reservoir tank of your
toilet (not the bowl).
To use the water in your pipes, let air into the plumbing by turning
on the faucet in your home at the highest level. A small amount
of water will trickle out. Then obtain water from the lowest faucet
in the home.
To use the water in your hot-water tank, be sure the electricity
or gas is off, and open the drain at the bottom of the tank. Start
the water flowing by turning off the water intake valve at the tank
and turning on the hot water faucet. Refill the tank before turning
the gas or electricity back on. If the gas is turned off, a professional
will
be needed to turn it back on.
Radiators
Hot water boilers (home heating system)
Water beds (fungicides added to the water or chemicals in the vinyl
may make water unsafe to use)
Water from the toilet bowl or flush tank
Swimming pools and spas (chemicals used to kill germs are too concentrated
for safe drinking but can be used for personal hygiene, cleaning,
and related uses)