Health risk assessment related to waterborne pathogens from the river to the tap

International Journal of Environmental Research and Public Health
Pauline JacobKarim Helmi

Abstract

A two-year monitoring program of Cryptosporidium parvum oocysts, Giardia duodenalis cysts, Escherichia coli, Clostridium perfringens spores and adenovirus was conducted in three large rivers in France used for recreational activities and as a resource for drinking water production. Fifty-liter river water and one thousand-liter tap water samples were concentrated using hollow-fiber ultrafiltration and analyzed by molecular biology or laser-scanning cytometry. In order to evaluate watershed land use influence on microorganism concentration changes, occurrence and seasonality of microorganisms were studied. The highest concentrations of protozoan parasites and C. perfringens were found for one of the three sites, showing a high proportion of agricultural territories, forests and semi-natural environments, which may be partly attributable to soil leaching due to rainfall events. On the contrary, the highest concentrations of adenoviruses were found at the two other sites, probably due to strong urban activities. Health risk assessment was evaluated for each waterborne pathogen regarding exposure during recreational activities (for a single or five bathing events during the summer). The calculated risk was lower than 0.5% for paras...Continue Reading

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Citations

Apr 22, 2018·Current Environmental Health Reports·Andrew F BrouwerJoseph N S Eisenberg
Jul 28, 2016·Parasite Immunology·U RyanA Paparini
Dec 16, 2018·International Journal of Environmental Research and Public Health·Asja KorajkicValerie J Harwood

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Methods Mentioned

BETA
PCR

Software Mentioned

Light Cycler 480

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