C A S E S T U D I E S O n a global basis, around two million deaths every year are attributed to water-borne diseases, especially to childhood diarrhoea and dysentery. In India, almost three- quarters of a billion people live in rural areas without access to safe drinking water, where water-borne infections are a major cause of illness. Water treatment methods used at the household level in such rural communities include boiling, small-scale filt

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