Microbiological effectiveness of locally produced ceramic filters for drinking water treatment in Cambodia.


Brown, J; Sobsey, MD; (2010) Microbiological effectiveness of locally produced ceramic filters for drinking water treatment in Cambodia. Journal of water and health, 8 (1). pp. 1-10. ISSN 1477-8920 DOI: https://doi.org/10.2166/wh.2009.007

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Abstract

Low-cost options for the treatment of drinking water at the household level are being explored by the Cambodian government and non-governmental organizations (NGOs) working in Cambodia, where many lack access to improved drinking water sources and diarrhoeal diseases are the most prevalent cause of death in children under 5 years of age. The ceramic water purifier (CWP), a locally produced, low-cost ceramic filter, is now being implemented by several NGOs, and an estimated 100,000+households in the country now use them for drinking water treatment. Two candidate filters were tested for the reduction of bacterial and viral surrogates for waterborne pathogens using representative Cambodian drinking water sources (rainwater and surface water) spiked with Escherichia coli and bacteriophage MS2. Results indicate that filters were capable of reducing key microbes in the laboratory with mean reductions of E. coli of approximately 99% and mean reduction of bacteriophages of 90-99% over >600 litres throughput. Increased effectiveness was not observed in filters with an AgNO3 amendment. At under US$10 per filter, locally produced ceramic filters may be a promising option for drinking water treatment and safe storage at the household level.

Item Type: Article
Faculty and Department: Faculty of Infectious and Tropical Diseases > Dept of Disease Control
PubMed ID: 20009242
Web of Science ID: 275310700001
URI: http://researchonline.lshtm.ac.uk/id/eprint/1702

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