Abstract
The physicochemical parameters of seven different borehole waters in Oke-Oyi, Ilorin East Local Government Area, Kwara State, Nigeria were assessed to determine it suitability for human consumption. The parameters examined include temperature (28 - 29⁰C), conductivity (414 - 1603 μs/cm), pH (5.71 - 6.57), total hardness (20.2 - 67.3 mg/L). The concentrations of heavy metals determined are Zn (0.010 – 0.022 mg/L), Fe (0.002 - 0.120 mg/L), Cr (0.075 - 0.12 mg/L), Cu (3x10 -4 – 2x10 -3 mg/L), Co (0.01 - 0.26 mg/L) and Mn (0.082 - 0.94 mg/L). There was no lead detected in two of the borehole water samples while those detected have low concentration range 1 x 10 -5 – 6 x 10 -5 . The results of physicochemical parameters obtained are within World Health Organisation (WHO) limits except for the pH that is slightly lower and the conductivity of OKY 1 that is slightly higher. Keywords : Borehole water, physicochemical parameters, Heavy metals, Community, Quality
Highlights
Water covers about 75% of the earth surface
This study is aimed at determining the physicochemical properties of selected borehole waters in Oke-Oyi Community, Ilorin East Local Government Area of Kwara State in order to ascertain the portability of the water and its quality for human use
The result of the hardness test (Table 1) for all the water samples shows that all the borehole waters are soft according to World Health Organisation (WHO) limit for drinkable water
Summary
Water covers about 75% of the earth surface. It is found as surface water in streams, rivers, etc, and as ground water when locks up in the rock (Chandra et al, 2012). It’s a known fact that human health and survival is connected with the availability of clean water for drinking and purposes. The presence of toxic metals such as Pb and Cd in the environment has been of environmental concern. This is mainly due to their health implications as some are carcinogenic and non-essential to human body (Tyler, 1981). Trace metals are common environmental pollutants with sources mainly from weathering of rocks (Merian, 1991). The concentration level of these metals in the environment has increased rapidly in the past few years as a result of human activities such as discharge of industrial and domestic wastes (Prater, 1975). This study is aimed at determining the physicochemical properties of selected borehole waters in Oke-Oyi Community, Ilorin East Local Government Area of Kwara State in order to ascertain the portability of the water and its quality for human use
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