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Chlorination in piped systems

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==Suitable conditions==

'''Area of use''': Wherever drinking-water needs to be disinfected and chlorine is available.

==Construction, operations or maintenance==

The flow rate of the raw water must be checked and adjusted if necessary, and the chlorine tank must be refilled with a freshly-prepared solution once or twice a week. Operators must be careful to avoid contact with chlorine compounds or solutions, and use protective gloves and utensils to prepare the chlorine solutions. The gloves and utensils will need to be replaced occasionally. In some cases, the amount of chlorine added to the water, together with residual chlorine levels, are recorded in a logbook. Chlorinators must be adjusted and cleaned of chlorine salts regularly, and when the hoses become corroded by chlorine they must be replaced.

If a steel chlorine tank is used, it must be painted and checked for corrosion every year, and the shelter for the chlorine tank needs to be maintained. Usually, the water committee appoints a caretaker who is trained for such work. The chlorine compound itself must be obtained from a merchant or the health department, and an adequate supply of chlorine compound must be kept in stock. An external organization, such as a government health or water department, will provide training for caretakers and perform monitoring.

==Costs==

Winona

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