Where large groups of people are displaced either by conflict or by natural disaster and they are likely to stay in a location for periods in excess of a few weeks, there will be a need to establish and probably subsequently upgrade a centralised water treatment system. This guideline focuses on community level needs where “bulk water treatment” is required. It is devised by the Oxfam Public Health Engineering Team to help provide a reliable water supply where mass displacement of people has occurred, e.g. as found in refugee camps and relief centres.
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