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Emergency
Water
Selecting Treatment Methods
Most water filtration devices are designed for use on
microbiologically safe water. Don't assume they are
safe to use on contaminated water. Check with the manufacturer
to be sure.
Use
the following guidelines to determine if filtration
equipment is adequate to use with microbiologically
contaminated water:
|
Filtration
Equipment
|
Safe
on Microbiologically
Contaminated Water?
|
| Carbon
Filter |
No |
| Reverse
Osmosis |
No |
| Deionization
Filter |
No |
| Pitcher
Filter |
No |
| Faucet
Mount Filter |
No |
| Steam
Distiller |
Yes
- but requires electricity |
| UV
Sterilizer |
Yes
- but requires electricity |
| Ceramic
Filter |
Some
- but only if rated for bacteriological protection |
| Aqua
Rain |
Yes
- no electricity or water pressure needed |
Equipment
that is safe to use on contaminated water is often slow,
costly, inconvenient and/or high maintenance. It makes
the most sense to use the filtration equipment that
best meets your normal daily needs and shift to water
storage or alternative methods of water treatment in
times of emergencies.
Making
Contaminated Water Safe
Making
Contaminated Water Safe: Boil, Chlorinate or Filter.
Straining:
If heavy levels of sediment or floating debris are present,
strain water through paper towels, paper coffee filters
or several layers of clean cloth into a clean container
before boiling, chlorinating or filtering.
Boiling Method: Boil water vigorously for 5 to
10 minutes to make it safe from harmful bacterial contamination.
Chlorination
Method: Chemically treat the water by adding liquid
chlorine household bleach. Use only bleach with a label
stating that the only active ingredient is sodium hypochlorite.
Add 2 drops of bleach to one quart, 8 drops to a gallon,
and 1/2 teaspoon to 5 gallons. Double these amounts
if the water is cloudy. Mix thoroughly by stirring or
shaking water in container. Let stand for 30 minutes.
A slight chlorine odor should be detectable in the water.
Filtration
Method: Check out Aqua Rain,
a ceramic gravity feed system.
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