Physicochemical and heavy metals concentration of selected boreholes water in Offa Local Government Area of Kwara State, Nigeria.
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Date
2015-04-21
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Publisher
Universities and Research Institutions in India.
Abstract
Water a sine qua non to human survival; therefore its quality cannot be compromised. The dependence on borehole water to meet both domestic and industrial needs have been on increase due to increased pollution of surface water bodies. This calls for the assessment of borehole water quality within Offa Local Government Area.Six different borehole waters were analysed for their heavy metals, physical characteristics, and chemical properties using standard methods. The result showed that the pH ranged from 4.0+0.2 to 6.0+0.2, colour (98+2.5 to 133+5.0) Hazen, Total solid (10.62+0.5 to 30.80+2)ppm, Tasteless and Odourless, SO42–(0.01+0.0001 to 1.33+0.5) ppm,NO3- (0.1+0.0001 to 0.64+0.002) ppm, Calcium (4.34+0.01 to 8.12+0.1) ppm, Potassium (0.31+0.001 to 6.80+0.03) ppm and Phosphorus (0.00 to 0.22+0.0002)ppm. Heavy metals Cr, Pb and Mn were not detected, Iron ranged from 0.01+0.002 to 0.06+0.001 ppm, Zinc (0.24+0.001 to 146+0.01) ppm. The %CV for the heavy metals was average except for Cobalt 89.29%. For the chemical properties there were high 108.16%K, 96.6% SO42- except for Ca (21.51%) and NO2-(19.61%). For the physical properties except for electrical conductivity 61.10% and turbidity 58.90% others were below average. However, comparing results with standards (WHO, EPA, US Public Health Service), the qualities were above average both for domestic and industrial use.