Note: Any residual chlorine/chloride present is filtered out by the Enagic filter before the solution is ionized.
Emergency Water Treatment Use:
Water treatment
For shock chlorination of wells or water systems, a 3% solution of household bleach is used. For larger systems, sodium hypochlorite is more practical because lower rates can be used. The alkalinity of the sodium hypochlorite solution also causes the precipitation of minerals such as calcium carbonate, so that the shock chlorination is often accompanied by a clogging effect. The precipitate also preserves bacteria, making this practice somewhat less effective.
Sodium hypochlorite has been used for the disinfection of drinking water. A concentration equivalent to about 1 liter of household bleach per 4000 liters of water is used. The exact amount required depends on the water chemistry, temperature, contact time, and presence or absence of sediment. In large-scale applications, residual chlorine is measured to titrate the proper dosing rate. For emergency disinfection, the United States Environmental Protection Agency recommends the use of 2 drops of 4% to 6% household bleach per liter of water. If the treated water does not smell of bleach, 2 more drops are to be added.
Many who would prefer to store drinking water on a long term basis for emergency use should consider following the same treatment protocol during the storage process (and not when the time comes to access the water); typically using the 'additional' treatment rate of approximately 15 drops per gallon of water (~1 spoon full per 7 gallons of water) unless the water is from a municipality and is known to be free of excessive contaminants and already contains a certain amount of sodium hypochlorite.
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