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WHO (Editor) (2005): How to measure chlorine residual in water. (= Technical Notes for Emergencies, 11). Geneva: World Health Organization (WHO). URL [Accessed: 31.03.2010].

Many of the most common diseases found in traumatized communities after a disaster or emergency are related to drinking contaminated water. This factsheet concentrates on the problems caused by drinking water contaminated by micro-organisms and their reduction by chlorination.