Academic Journals Database
Disseminating quality controlled scientific knowledge

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

Author(s): Mireille E. Nougang | Moïse Nola | Euphrasie Djuikom | Olive V. Noah Ewoti | Luciane M. Moungang | Henriette Ateba Bessa

Journal: Current Research Journal of Biological Sciences
ISSN 2041-076X

Volume: 3;
Issue: 6;
Start page: 622;
Date: 2011;
Original page

Keywords: Enteropathogenic E. coli | enterotoxigenic E. coli | physico-chemical parameters | well water

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.
Why do you need a reservation system?      Affiliate Program