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  • The impact of rainfall and seasonal variability on the removal of bacteria by a point-of-use drinking water treatment intervention in Chennai, India

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    MacDonaldPUB2.pdf (829.5Kb)
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    Accepted Manuscript (AM)
    Author(s)
    MacDonald, Morgan C
    Juran, Luke
    Jose, Jincy
    Srinivasan, Sekar
    Ali, Syed I
    Aronson, Kristan J
    Hall, Kevin
    Griffith University Author(s)
    MacDonald, Morgan C.
    Year published
    2016
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    Abstract
    Point-of-use water treatment has received widespread application in the developing world to help mitigate waterborne infectious disease. This study examines the efficacy of a combined filter and chemical disinfection technology in removing bacterial contaminants, and more specifically changes in its performance resulting from seasonal weather variability. During a 12 month field trial in Chennai, India, mean log-reductions were 1.51 for E. coli and 1.67 for total coliforms, and the highest concentration of indicator bacteria in treated water samples were found during the monsoon season. Analysis of variance revealed significant ...
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    Point-of-use water treatment has received widespread application in the developing world to help mitigate waterborne infectious disease. This study examines the efficacy of a combined filter and chemical disinfection technology in removing bacterial contaminants, and more specifically changes in its performance resulting from seasonal weather variability. During a 12 month field trial in Chennai, India, mean log-reductions were 1.51 for E. coli and 1.67 for total coliforms, and the highest concentration of indicator bacteria in treated water samples were found during the monsoon season. Analysis of variance revealed significant differences in the microbial load of indicator organisms (coliforms and E. coli) between seasons, storage time since treatment, and samples with and without chlorine residuals. Findings suggest that the bacteriological quality of drinking water treated in the home is determined by a complex interaction of environmental and sociological conditions. Moreover, while the effect of disinfection was independent of season, the impact of storage time since treatment on water quality was found to be seasonally dependent.
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    Journal Title
    International Journal of Environmental Health Research
    Volume
    26
    Issue
    2
    DOI
    https://doi.org/10.1080/09603123.2015.1089532
    Copyright Statement
    © 2016 Taylor & Francis. This is an Accepted Manuscript of an article published by Taylor & Francis in International Journal of Environmental Health Research on 25 Sep 2015, available online: https://doi.org/10.1080/09603123.2015.1089532
    Subject
    Microbiology
    Environmental sciences
    Natural resource management
    Biological sciences
    Biomedical and clinical sciences
    Injury prevention
    Publication URI
    http://hdl.handle.net/10072/171278
    Collection
    • Journal articles

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