American Journal of Water Resources
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American Journal of Water Resources. 2020, 8(5), 211-217
DOI: 10.12691/ajwr-8-5-1
Open AccessArticle

Evaluating Drinking Water Quality from Various Sources in a Peri Urban Area on the North Eastern flank of Mount Cameroon

Usongo P. Ajonina1, , Guy E. Ediamam1, Gordon N. Ajonina2, 3 and Enjongaya Z. Atiekum1

1Department of Geography, P.O Box 63, University of Buea, Cameroony

2Institute of Fisheries and Aquatic Sciences, University of Douala (Yabassi), Cameroon

3Cameroon Wildlife Conservation Society (CWCS), Coastal Forests and Mangrove, Programme BP 54 Mouanko, Littoral Region, Cameroon

Pub. Date: September 29, 2020

Cite this paper:
Usongo P. Ajonina, Guy E. Ediamam, Gordon N. Ajonina and Enjongaya Z. Atiekum. Evaluating Drinking Water Quality from Various Sources in a Peri Urban Area on the North Eastern flank of Mount Cameroon. American Journal of Water Resources. 2020; 8(5):211-217. doi: 10.12691/ajwr-8-5-1

Abstract

The present study aimed to calculate water quality index (WQI) through the analysis of eleven chemical parameters on the basis of the Weighted Arithmetic Index on six water sources; rain, well, stream, tap, river and spring during the dry and rainy seasons in order to assess their suitability for drinking purpose in Mbonge Marumba a peri urban area on the north eastern flank of Mount Cameroon. Water samples were collected from the field and analyzed at the nearby Ekona Research Laboratory. The Analysis of variance (ANOVA) was used to test if there were any significant differences of water parameters between the water sources and season. The WHO standard was used to compare the values of the water parameters tested through the percentage variance. Results revealed that Ca2+ is the most abundant cation followed by Mg2+, K+, Na+ and NH4+. The relative abundance of anions (mg/l) in different water sources were as follows: HCO3‾ > Cl‾ > NO3‾ > SO42‾ >H PO42‾. These results reflect an influence of natural processes mainly from rock weathering. A wide variation (>-80%) between the actual values and the WHO standard was observed for most parameters with the exception of pH with a variance of -32% to -34%. HCO3- showed a higher value than that of the WHO standard. It ranged from 4.9 in rain water to 66.9 in tap water while the WHO standard permissible limit is 0.1. The WQI ranged from 3,137 for rain water, during the rainy season to 42,981 for tap water during the dry season. These index values revealed that the status of the various water sources in terms of ions and cations composition in the area are unsuitable for drinking.

Keywords:
anions Cations Drinking water quality chemical parameters Water Quality Index (WQI)

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