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The Sumatra Tsunami has affected many fresh groundwater resources in the low-lying coastal zones in the north-eastern part of the Indian Ocean (Gulf of Bengal). [Figure 1|^swi_depression_general.jpg} gives a sketch of possible impacts on freshwater resources in coastal aquifers. Questions can be asked about how serious the impacts of the floods on fresh groundwater resources are; about how harmful they are from a drinking water point of view; and about how long it takes before the contaminated freshwater resources are clean again for consumption.
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