Journal of Environmental Science and Water Resources                                            ISSN 2277 0704

Vol. 4(3), pp. 060 - 070, April 2015                                                                 2015 Wudpecker Journals


Bacteriological assessment of drinking water sources in the vicinities of Lakes Nyos and Monoun (Cameroon, Central Africa)


*Rosine E Tiodjio1, Wilson Y Fantong3, Kamtchueng B Tchakam1, Gregory Tanyileke3, Takeshi Ohba2, Victor J Hell3, Minoru Kusakabe1, Shogo Nakamura1 and Akira Ueda1


1Department of Environmental and Energy Sciences, Graduate School of Science and Engineering, University of Toyama, Toyama 930-8555, Japan.
2Department of Chemistry, School of Science, University of Tokai, Kanagawa 259-1292, Japan.
3Institute of Mining and Geological Research, P.O. Box 4110, Yaoundé, Cameroon.


*Corresponding author E-mail:;


Accepted 25 February 2015




Bacteriological analyses of 19 water sources around Lake Monoun and 17 around Lake Nyos were done in 2013. That is, they dealt with water used by the populations living in the vicinities of both lakes. Specifically survivors of Lake Nyos past CO2 disaster (gas explosion in 1986 that claimed about 1800 lives) and the fast growing population inhabiting the vicinities of Lake Monoun. Water samples from wells, springs, and streams for multipurpose daily use were analysed for total coliforms, faecal coliforms and faecal streptococci using the membrane filtration technique. Results revealed the presence of the three bacterial indicators in nearly all the water sources. In the Lake Monoun area, all the 19 analysed samples contained total coliforms, 16 (84.2%) and 17 (89.5%) samples contained faecal coliforms and faecal streptococci, respectively. All the 17 samples collected around Lake Nyos contained total and faecal coliforms, and 16 (94.1%) samples contained faecal streptococci. Such high percentages of contamination raise a concern on the suitability of the water sources that are used for drinking and other domestic purposes. The data provide evidence of fecal contamination in most of the water sources in both areas, implying health threat to consumers. There is a need to improve water sanitation in both areas.


Key words: Drinking water quality, Lake Monoun, Lake Nyos, coliforms, streptococci.




  Cite this Reference:

Rosine E Tiodjio, Wilson Y Fantong, Kamtchueng B Tchakam, Gregory Tanyileke, Takeshi Ohba, Victor J Hell, Minoru Kusakabe, Shogo Nakamura, Akira Ueda (2015). Bacteriological assessment of drinking water sources in the vicinities of Lakes Nyos and Monoun (Cameroon, Central Africa).  J. Environ. Sci. Water Resourc. 4(3): 060-070.