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Am J Trop Med Hyg. 2004 Jun;70(6):651-7.

Reducing diarrhea through the use of household-based ceramic water filters: a randomized, controlled trial in rural Bolivia.

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1
Department of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom. thomas.clasen@lshtm.ac.uk

Abstract

Ceramic water filters have been identified as one of the most promising and accessible technologies for treating water at the household level. In a six-month trial, water filters were distributed randomly to half of the 50 participating households in a rural community in Bolivia; the remaining households continued to use customary water handling practices and served as controls. In four rounds of sampling following distribution of the filters, 100% of the 96 water samples from the filter households were free of thermotolerant coliforms compared with 15.5% of the control household samples. Diarrheal disease risk for individuals in intervention households was 70% lower than for controls (95% confidence interval [CI] = 53-80%; P < 0.001). For children less than five years old, the reduction in risk was 83% (95% CI = 51-94%; P < 0.001). These results show that affordable ceramic water filters enable low-income households to treat and maintain the microbiologic quality of their drinking water.

PMID:
15211008
[Indexed for MEDLINE]
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