Physicochemical and Microbial Parameters of Water From Hand-Dug Wells From Nyamebekyere, A Surburb of Obuasi, Ghana

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Author(s) J. Apau | Akwasi Acheampong | Vitus Bepule
Pages 347-351
Volume 3
Issue 6
Date June, 2014
Keywords Physiochemical, Fecal and Total Coliforms, Groundwater.
Abstract

Exploitation of groundwater through the construction of hand-dug wells is a major source of drinking water for majority of the populace of developing nations. The need to assess the quality of water from this source has now become imperative because of the health impacts on individuals. Ten groundwater samples were taken from different parts of Obuasi and analyzed for physicochemical parameters including pH, electrical conductivity, total dissolved solids, alkalinity, total hardness and coliform bacteria. Metals and anions analyzed were Ca, Mg, Fe, Zn, Pb, NO3−, NO2−, SO42−, PO42−, F− and Cl−. Bacteria analysed were total and fecal coliforms. The data showed variation of the investigated parameters in samples as follows: pH, 5.86-6.61; conductivity (EC), 29.89-310.97μS/cm; turbidity, 1.33-32.2 NTU; total suspended solids (TSS), b/d–26mg/L; total dissolved solids (TDS), 30.73-314.4mg/L; alkalinity, 8.0–90.37mg/L; total hardness, 9.06-104.0mg/L; calcium hardness, 4.0 – 73.09mg/L; magnesium hardness, 4.73-50.34mg/L; Ca, 1.6-29.27mg/L; Mg, 1.15-12.22mg/L; Fe, 0.011-0.31mg/L; Pb, 0.09-0.20mg/L; Zn, b/d - 0.21mg/L; F−, b/d - 0.24mg/L; Cl−, 1.67-25.7mg/L; NO2−, b/d; NO3−, b/d -10.99mg/L; SO42−, b/d -14.10mg/L; PO43−, b/d - 2.35mg/L; Total coliforms were 2-44CFU per 100mL and fecal coliforms were 0-16CFU per 100 ml in all the samples. The concentrations of most of the investigated physicochemical parameters in the groundwater were within the permissible limits of the World Health Organization drinking water quality guidelines but the Total and fecal coliforms make the water not potable.

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