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Quality of drinking-water at source and point-of-consumption-drinking cup as a high potential recontamination risk : a field study in Bolivia

Rufener, S. and Mäusezahl, D. and Mosler, H. J. and Weingartner, R.. (2010) Quality of drinking-water at source and point-of-consumption-drinking cup as a high potential recontamination risk : a field study in Bolivia. Journal of health, population and nutrition, Vol. 28, H. 1. pp. 34-41.

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Official URL: http://edoc.unibas.ch/dok/A5843001

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Abstract

In-house contamination of drinking-water is a persistent problem in developing countries. This study aimed at identifying critical points of contamination and determining the extent of recontamination after water treatment. In total, 81 households were visited, and 347 water samples from their current sources of water, transport vessels, treated water, and drinking vessels were analyzed. The quality of water was assessed using Escherichia coli as an indicator for faecal contamination. The concentration of E. coli increased significantly from the water source [median=0 colony-forming unit (CFU)/100 mL, interquartile range (IQR: 0-13)] to the drinking cup (median=8 CFU/100 mL; IQR: 0-550; n= 81, z=-3.7, p>0.001). About two-thirds (34/52) of drinking vessels were contaminated with E. coli. Although boiling and solar disinfection of water (SODIS) improved the quality of drinking-water (median=0 CFU/100 mL; IQR: 0-0.05), recontamination at the point-of-consumption significantly reduced the quality of water in the cups (median=8, IQR: 0-500; n=45, z=-2.4, p=0.015). Home-based interventions in disinfection of water may not guarantee health benefits without complementary hygiene education due to the risk of post-treatment contamination
Faculties and Departments:09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH) > Former Units within Swiss TPH > Health Systems and Policies (de Savigny)
UniBasel Contributors:Mäusezahl, Daniel
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:ICDDR
ISSN:1606-0997
Note:Publication type according to Uni Basel Research Database: Journal article
Last Modified:14 Sep 2012 07:19
Deposited On:14 Sep 2012 06:48

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