Environmental Geochemistry and Health

, Volume 33, Issue 6, pp 559–575 | Cite as

Evaluation of groundwater quality and its suitability for drinking, domestic, and agricultural uses in the Banana Plain (Mbanga, Njombe, Penja) of the Cameroon Volcanic Line

  • Andrew Ako Ako
  • Jun Shimada
  • Takahiro Hosono
  • Kimpei Ichiyanagi
  • George Elambo Nkeng
  • Wilson Yetoh Fantong
  • Gloria Eneke Takem Eyong
  • Ntankouo Njila Roger
Original Paper

Abstract

Groundwater quality of the Banana Plain (Mbanga, Njombe, Penja—Cameroon) was assessed for its suitability for drinking, domestic, and agricultural uses. A total of 67 groundwater samples were collected from open wells, springs, and boreholes. Samples were analyzed for physicochemical properties, major ions, and dissolved silica. In 95% of groundwater samples, calcium is the dominant cation, while sodium dominates in 5% of the samples. Eighty percent of the samples have HCO3 as major anion, and in 20%, NO3 is the major anion. Main water types in the study area are CaHCO3, CaMgHCO3, CaNaHCO3, and CaNaNO3ClHCO3. CO2-driven weathering of silicate minerals followed by cation exchange seemingly controls largely the concentrations of major ions in the groundwaters of this area. Nitrate, sulfate, and chloride concentrations strongly express the impact of anthropogenic activities (agriculture and domestic activities) on groundwater quality. Sixty-four percent of the waters have nitrate concentrations higher than the drinking water limit. Also limiting groundwater use for potable and domestic purposes are contents of Ca2+, Mg2+ and HCO3 and total hardness (TH) that exceed World Health Organization (WHO) standards. Irrigational suitability of groundwaters in the study area was also evaluated, and results show that all the samples are fit for irrigation. Groundwater quality in the Banana Plain is impeded by natural geology and anthropogenic activities, and proper groundwater management strategies are necessary to protect sustainably this valuable resource.

Keywords

Groundwater Quality Suitability Banana Plain Cameroon Volcanic Line 

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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Andrew Ako Ako
    • 1
    • 4
  • Jun Shimada
    • 1
  • Takahiro Hosono
    • 2
  • Kimpei Ichiyanagi
    • 1
  • George Elambo Nkeng
    • 3
  • Wilson Yetoh Fantong
    • 4
  • Gloria Eneke Takem Eyong
    • 4
  • Ntankouo Njila Roger
    • 5
  1. 1.Graduate School of Science and Technology, Isotope Hydrology LaboratoryKumamoto UniversityKumamotoJapan
  2. 2.Priority Organization for Innovation and ExcellenceKumamoto UniversityKumamotoJapan
  3. 3.National Advanced School of Public Works YaoundéYaoundéCameroon
  4. 4.Hydrological Research Centre Yaoundé-CameroonYaoundéCameroon
  5. 5.Department of Agric Engineering, Water Resources Management LaboratoryUniversity of DschangDschangCameroon

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