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Assessment of Concentration of Heavy Metals in Drinking Water in Assela Town, Oromia Region, Ethiopia

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Author Affiliations

  • 1Chemistry Program, Adama Science and Technology University, Adama, Ethiopia
  • 2Chemistry Program, Adama Science and Technology University, Adama, Ethiopia
  • 3Chemistry Program, Adama Science and Technology University, Adama, Ethiopia

Int. Res. J. Environment Sci., Volume 5, Issue (10), Pages 28-34, October,22 (2016)

Abstract

This research was initiated to determine the level of heavy metals in drinking water of Assela town, Ethiopia. Analysis on 5 drinking water samples collected from three River water, and two tap waters was carried out. All the samples were analyzed for seven heavy metals (Pb, Cd, Cr, Fe, Co, Zn, and Ni) using FAAS. The samples were found to contain the following mean concentrations (mg/L) of the heavy metals: Pb (0.001-0.087), Cd (0.0020-0.0067), Cr (0.014-0.101), Fe (0.13-0.55), Co (0.011- 0.073), Zn (0.002-0.34) and Ni (0.006-0.84. Comparison of the results with accepted international standard was carried out. It has been revealed that the concentrations of (Pb, Cr, Cd, Fe, Co and Ni) in River water, (Pb, Cr, Cd, Co and Ni) in tap water were above the maximum limits recommended by WHO. Whereas Zn in river water and (Fe and Zn) in tap water were below the limits recommended by WHO. The concentrations (Pb, Cd, Fe and Ni) in river water and Pb in tap water were above the maximum limits recommended by USEPA. But the concentrations of (Cr, Co and Zn) in river water and (Cr, Cd, Fe, Co, Zn and Ni) in tap water were not above the maximum limits recommended by USEPA. The concentration levels of (Pb, Cr, Fe and Ni) in river water and (Pb, Cr, Fe and Ni) in tap water were above value recommended by EU. The results of the study clearly presented that there is a threat of pollution hazards in the study area with important human health implications.

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