Objectives: Groundwater
is the primary source of drinking water for roughly, a third of the world’s
population, but highly vulnerable to pollution. A thorough research was carried
out to investigate the extent of groundwater contamination on four active
dumpsite and a control point at Papalanto, Abeokuta area, and South-Western
Nigeria.
Methods: Domestic wells in the area facilitated the resources
for water chemistry. A total of five groundwater samples were collected from
wells located close to different dumpsite in the study area, to determine the
extent of groundwater contamination. Physio-chemical analysis was carried out
on the five water samples; the basic method adopted in the chemical analysis
includes titrimetric method, atomic absorption spectroscopy and calometric
method.
Results: The results showed that water quality parameter like
temperature, pH, taste, odour, total solids, sulphate, copper, iron, zinc, cadmium
and chromium are in appropriate standard prescribed by WHO and NSDWQ. Other
physical parameters like color, turbidity, conductivity, total suspended
solids, total dissolved solid, total hardness, total alkalinity, total acidity,
calcium, magnesium, chloride, nitrite, manganese, lead, nickel, nitrate, have
higher values than the authorized standard value, which directly or indirectly
affect the water content found in the area for drinking purpose. These features
could be attributed to the possible activities of contaminants facilitated by
leachate plume from the dumpsite.
Conclusions: The
study shows that the regolith aquifer in the area of study is highly vulnerable
to pollution from the refuse dumps. From the geophysical and physio-chemical
analysis carried out, the values of most parameters obtained in the water
samples collected at locations close to the leachate have been confirmed to be
higher than those collected at locations away from the leachate. Hence, the
groundwater near the leachate is confirmed contaminated.
Primary Language | English |
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Subjects | Public Health, Environmental Health, Health Care Administration |
Journal Section | Original Articles |
Authors | |
Publication Date | May 4, 2019 |
Submission Date | January 23, 2018 |
Acceptance Date | March 20, 2018 |
Published in Issue | Year 2019 |