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

TF Clasen, J Brown, S Collin, O Suntura, S Cairncross

Research output: Contribution to journalArticle (Academic Journal)peer-review

97 Citations (Scopus)

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.
Translated title of the contributionReducing diarrhea through the use of household-based ceramic water filters: a randomized, controlled trial in rural Bolivia
Original languageEnglish
Pages (from-to)651 - 657
Number of pages7
JournalAmerican Journal of Tropical Medicine and Hygiene
Volume70
Publication statusPublished - Jun 2004

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