How to measure chlorine residual in water WHO (2005)
Many of the most common diseases found in traumatized communities after a disaster or emergency are related to drinking contaminated water. The contamination can be from micro-organisms (Table 1) or natural and man made chemicals (Table 2). This fact sheet concentrates on the problems caused by drinking water contaminated by micro-organisms as these are by far the most common and can be reduced by chlorination. Chemical contamination is difficult to remove and requires specialist knowledge and equipment.
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WHO (2005). How to measure chlorine residual in water WHO
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