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VOL. 6, ISSUE 1 (2024)
Health risk assessment of heavy metal–contaminated well water around mechanic workshops
Authors
Chioma Udoka Okeke
Abstract
The study investigated the pH, Total Dissolved Solids, Electrical
Conductivity, turbidity and heavy metal levels in six well water samples
collected from 3 automobile workshops located in New GRA, Yelwa and Wuntin Dada
in Bauchi LGA of Bauchi State. Results from analysis showed that the metals
investigated were present in all the water samples, except Pb in the wells in
New GRA, Wuntin Dada and Well 2 in Yelwa. With the exception of Cd (0.001mg/l)
in Well2 in New GRA and Cu in all the samples, the means of each of the metals
in the well samples were higher than the values obtained from control sites,
the recommended values obtained from the Nigeria Standards for Drinking Water
Quality (NSDWQ) and the World Health Organisation (WHO). The mean
pH value of the water samples examined were observed to be within the
recommended standard, except in the wells 1 (6.35) and 2 (6.34) in New GRA,
showing that the water in these wells are slightly acidic. The turbidity of the
well water was lower than the standard, except in well2 (10.05NTU) in Yelwa. The
electrical conductivity and total dissolved solid were lower than the
recommended value but far above the values obtained for the control samples.
The heavy metal pollution indices show that the well water samples are polluted
with the various heavy metals studied, except Cu. The HQ and HI values exceeded
1, showing high potential non-carcinogenic risk to humans. The well water in
the mechanic workshops are therefore not suitable for drinking and other
domestic purpose.
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Pages:32-41
How to cite this article:
Chioma Udoka Okeke "Health risk assessment of heavy metal–contaminated well water around mechanic workshops". International Journal of Environmental and Ecology Research, Vol 6, Issue 1, 2024, Pages 32-41
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