Escherichia coli as a Tool for Disease Risk Assessment of Drinking Water Sources

Many diseases have been associated with poor drinking water quality including diseases caused by diarrheagenic pathogens, especially in developing countries where access to a consistent water supply is a problem. The objective of the study was to evaluate the health risks associated with the sources...

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Main Authors: Stephen T. Odonkor, Tahiru Mahami
Format: Article
Language:English
Published: Wiley 2020-01-01
Series:International Journal of Microbiology
Online Access:http://dx.doi.org/10.1155/2020/2534130
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author Stephen T. Odonkor
Tahiru Mahami
author_facet Stephen T. Odonkor
Tahiru Mahami
author_sort Stephen T. Odonkor
collection DOAJ
description Many diseases have been associated with poor drinking water quality including diseases caused by diarrheagenic pathogens, especially in developing countries where access to a consistent water supply is a problem. The objective of the study was to evaluate the health risks associated with the sources of drinking water in the Dangme West District of Ghana using E. coli as a measurement tool, aiming at ascertaining the paths leading to contamination of the water sources. A total of 464 water samples were obtained for analysis. Sampling covered a year across the dry and wet seasons in Ghana. Water samples were obtained from groundwater and surface water sources. E. coli counts were determined using the most probable number method (MPN). Disease risk assessment was carried out using the WHO drinking water risk assessment guidelines. Generally, the study revealed significantly higher E. coli counts in the wet season than in the dry season. Among the water samples analyzed, surface water, especially from the dams, was found to pose the highest disease risk as compared to the other water sources. Samples from groundwater sources, especially boreholes, posed the lowest disease risk. In conclusion, observations from the study implied that most water sources in the study district are highly polluted with bacteria pathogens beyond recommended safety guidelines. The main causes of faecal contamination in these water sources were purported to be anthropogenic. Therefore, there is a need to formulate a policy aimed at managing and improving rural water sources.
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spelling doaj-art-86ff8b438aa841eebc1637f5daa50d912025-08-20T02:08:31ZengWileyInternational Journal of Microbiology1687-918X1687-91982020-01-01202010.1155/2020/25341302534130Escherichia coli as a Tool for Disease Risk Assessment of Drinking Water SourcesStephen T. Odonkor0Tahiru Mahami1School of Public Service and Governance, Ghana Institute of Management and Public Administration, Accra, GhanaGhana Atomic Energy Commission, Kwabenya, Accra, GhanaMany diseases have been associated with poor drinking water quality including diseases caused by diarrheagenic pathogens, especially in developing countries where access to a consistent water supply is a problem. The objective of the study was to evaluate the health risks associated with the sources of drinking water in the Dangme West District of Ghana using E. coli as a measurement tool, aiming at ascertaining the paths leading to contamination of the water sources. A total of 464 water samples were obtained for analysis. Sampling covered a year across the dry and wet seasons in Ghana. Water samples were obtained from groundwater and surface water sources. E. coli counts were determined using the most probable number method (MPN). Disease risk assessment was carried out using the WHO drinking water risk assessment guidelines. Generally, the study revealed significantly higher E. coli counts in the wet season than in the dry season. Among the water samples analyzed, surface water, especially from the dams, was found to pose the highest disease risk as compared to the other water sources. Samples from groundwater sources, especially boreholes, posed the lowest disease risk. In conclusion, observations from the study implied that most water sources in the study district are highly polluted with bacteria pathogens beyond recommended safety guidelines. The main causes of faecal contamination in these water sources were purported to be anthropogenic. Therefore, there is a need to formulate a policy aimed at managing and improving rural water sources.http://dx.doi.org/10.1155/2020/2534130
spellingShingle Stephen T. Odonkor
Tahiru Mahami
Escherichia coli as a Tool for Disease Risk Assessment of Drinking Water Sources
International Journal of Microbiology
title Escherichia coli as a Tool for Disease Risk Assessment of Drinking Water Sources
title_full Escherichia coli as a Tool for Disease Risk Assessment of Drinking Water Sources
title_fullStr Escherichia coli as a Tool for Disease Risk Assessment of Drinking Water Sources
title_full_unstemmed Escherichia coli as a Tool for Disease Risk Assessment of Drinking Water Sources
title_short Escherichia coli as a Tool for Disease Risk Assessment of Drinking Water Sources
title_sort escherichia coli as a tool for disease risk assessment of drinking water sources
url http://dx.doi.org/10.1155/2020/2534130
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AT tahirumahami escherichiacoliasatoolfordiseaseriskassessmentofdrinkingwatersources