Abuja Journal of Agriculture and Environment (AJAE)

INDUSTRIAL ESTATE, SOUTHWEST NIGERIAASSESSMENT OF SOME SELECTED HEAVY METALS POLLUTION IN DRINKING WATER SOURCES OF AGBARA
Author(s): Okoh, M.O., Audu, A.,Onuma, S. A.,Akande, G., Amhakhian, S.O. Malgwi, O. D.
Volume/Issue: Volume 1 , Issue 2 (2021)

ABSTRACT:

The impact of heavy metal in drinking water sources of Agbara Industrial Estate, Southwest, Nigeria, was examined to evaluate the level of heavy metal (Arsenic, Cadmium, Chromium, Copper and Lead) pollution. Water samples were collected from borehole, river, tap-water and well-water within and outside Agbara industrial estate. The concentration of the selected heavy metals in the water was analyzed. The concentration of Arsenic in water samples within the study area ranges from 0.014 to 0.040 MgL-1. The highest mean Arsenic concentration (0.035MgL-1) within the study area was observed from water samples collected from river, Cadmium concentration within the study area ranged from 0.018 to 0.035 MgL-1,Chromium concentration ranged from 0.11 to 0.28 MgL-1, Copper concentration ranges from 2.20 to 2.69MgL-1, while the concentration of Lead ranges from 0.19 to 0.34 MgL-1. The concentration of all the metals investigated is higher than their maximum permissible limit for consumption. The results of this research proved that drinking water sources are significantly affected by the presence and activities of industries within the study area. This water when consumed over time poses serious health related hazards, therefore in other to reduce contamination of drinking water by heavy metals, Companies should treat their wastes by precipitating metals thus reducing their mobility through seepage, companies should also construct ponds with adequate retention times that can enhance the removal and retention of metals.

KEYWORDS:

Heavy metals, Drinking water sources, Agbara Industrial Estate, Southwest, Nigeria.