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Article Information:
Abundance of Faecal Coliforms and Pathogenic E. coli Strains in Groundwater in the Coastal Zone of Cameroon (Central Africa), and Relationships with Some Abiotic Parameters
Mireille E. Nougang, Moïse Nola, Euphrasie Djuikom, Olive V. Noah Ewoti, Luciane M. Moungang and Henriette Ateba Bessa
Corresponding Author: Moïse NOLA
Submitted: 2011 September, 21
Accepted: 2011 September, 30
Published: 2011 November, 15 |
Abstract:
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This study aimed to assess the impact of many pollution sources on the microbiological water quality
of 20 wells in the coastal zone of Cameroon (Central Africa) and the relationships with some physico-chemical
parameters that can influence the bacterial growth. The average values of faecal coliforms obtained during this
study reached 19×103 CFU/L. The abundance of pathogenic strains of Enteropathogenic E. coli (EPEC) and
Enterotoxigenic E. coli (ETEC) sometimes reached 3 CFU/L of water. The water temperature ranged from 21.2
to 29ºC, the pH from 3.55 to 12, and the electrical conductivity from 11.80 to 2189 μS/cm. The concentration
of the dissolved oxygen ranged from 0.5 to 7 mg/L while that of CO2 ranged from 0.6 to 188.3 mg/L. The
concentrations of ions ranged from 0.01 to 28.64 mg/L for orthophosphate, from 0 to 23.10 mg/L for nitrogen
ammonia, from 0.01 to 3.20 mg/L for nitrates, from 1 to 225 Pt. Co for the color, and from 1 to 39 FTU for the
turbidity. The relationships between the abundance of each bacterial group identified and each physicochemical
parameter considered varied from with respect to the sampling site and are non significant in most
cases (p>0.05). This suggests the involvement of a large numbers of environmental factors in the distribution
of species and strains of bacteria isolated from this groundwater points. The consumption of groundwater from
this region is a health risk in the short term.
Key words: Enteropathogenic E. coli, enterotoxigenic E. coli, physico-chemical parameters, well water, , ,
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Cite this Reference:
Mireille E. Nougang, Moïse Nola, Euphrasie Djuikom, Olive V. Noah Ewoti, Luciane M. Moungang and Henriette Ateba Bessa, . Abundance of Faecal Coliforms and Pathogenic E. coli Strains in Groundwater in the Coastal Zone of Cameroon (Central Africa), and Relationships with Some Abiotic Parameters. Current Research Journal of Biological Sciences, (6): 622-632.
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ISSN (Online): 2041-0778
ISSN (Print): 2041-076X |
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