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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/30036

Title: Field test of a silver-impregnated ceramic water filter
Authors: Roberts, Michael
Issue Date: 2004
Publisher: © WEDC, Loughborough University
Citation: ROBERTS, M., 2004. Field test of a silver-impregnated ceramic water filter. IN: Godfrey, S. (ed). People-centred approaches to water and environmental sanitation: Proceedings of the 30th WEDC International Conference, Vientiane, Laos, 25-29 October 2004, pp. 499-504.
Abstract: The silver-impregnated Ceramic Water Purifier (CWP) is a low-cost household water filter that removes micro-biological contamination at the point of use. One thousand CWPs were distributed in twelve Cambodian villages to test their effectiveness under conditions of rural household use. Water quality tests (n=686) were conducted to measure filter performance. A control group comparison survey (n=201) and a baseline and follow-up survey (n=1,000) measured impacts on household health and expenses. Ninety-nine percent of CWPs produced water meeting WHO ‘low risk’ guidelines or better (10 or fewer E. coli per 100 ml). Households that used CWPs experienced significantly lower incidence of diarrhoea than households without CWPs. Households that had previously boiled their drinking water experienced savings in time and expenses after using the CWP. The CWP’s low production cost (US$5.50) opens the possibility of reaching large numbers of the rural poor through sustainable market channels.
Description: This is a conference paper.
Version: Published
URI: https://dspace.lboro.ac.uk/2134/30036
Appears in Collections:WEDC 30th International Conference

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