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Electronic journal of the International Association
for Environmental Hydrology
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JEH Volume 7 (1999), Paper 12, September 1999 Posted
September 13, 1999
BACTERIOLOGICAL PROPERTIES OF GROUNDWATER IN PARTS OF NIGER STATE,
NIGERIA
P.D. Shekwolo and M.O. Brisbe
Departments of Geology and Biological Sciences, Federal University
of Technology, Minna, Nigeria
ABSTRACT
Bacteriological analysis of groundwater from newly drilled boreholes
in hospital environments in towns and villages in central Nigeria, has
revealed that groundwater can be contaminated by microorganisms, even in
a seemingly well-designed and constructed water well, particularly if the
wells are located in urban areas or in public sanitary places such as hospitals
or health centers. Microorganisms can gain access to boreholes through
one of the following mechanisms; surface runoff, leachate migration, use
of contaminated water for drilling, and improper handling of well construction
materials and water supply fittings. It is not a normal practice for microbiological
analysis of soils to be carried out in groundwater exploration program.
However, the findings in this study suggest that buried feces or damaged
sewers could be potential sources of contamination to the groundwater system,
if wells are inadvertently sited in such areas. It is suggested that in
developing countries, microbiological analysis of soil deposits be included
in the exploration program for selection of a suitable drilling site, and
in the general quality assessment for potability of water, particularly
in urban areas that may be suspected to host potential contaminant sources.
Reference: Shekwolo, P.D. and M.O. Brisbe; Bacteriological
Properties of Groundwater in Parts of Niger State, Nigeria, Journal
of Environmental Hydrology, Vol. 7, Paper 12, September 1999.
Dr. Philip D. Shekwolo
Federal University of Technology, Minna
Department of Geology
P.M.B. 65
Minna, Niger State
Nigeria