2 research outputs found
Physicochemical assessment and bacteriological studies of hand-dug wells of major markets in south western, Nigeria
Rapid population in developing nations has imposed
stress on groundwater resources, thus the need to assess
physicochemical and bacteriological impact of microbes on
hand-dug wells along some major markets in Ibadan Southwestern
Nigeria. Water samples from hand-dug wells were
measured sequentially, and total dissolved solute (TDS), pH,
electrical conductivity (EC), salinity, and temperature were
measured in situ. Water samples were analyzed at a Microbiology
Laboratory. Most probable techniques used for
micro-organism analysis were in three stages: presumptive
test used for confirmation of Escherichia coli, confirmed test
for total viable bacteria count (TVBC), and complete test to
reconfirm the presence of coliform. Presumptive test showed
high rate of E. coli in most of the hand-dug wells with
(37.5 %). Confirmed test revealed Staphylococcus aureus to
be 25 %, followed by Proteus vulgaris (14.6 %), Bacillus
species (12.5 %), Pseudomonas aeruginosa (8.3 %), and
Klebsiella spp. (2.1 %) respectively. Total viable bacteria
counts are 500 to 192,000. Physicochemical results (total dissolved
solute (TDS), pH, electrical conductivity (EC), salinity,
temperature) when compared with WHO (2006) and SON
(2007) revealed all the parameters to be within the permissible
limits except pH (5.8 to 9.56), and high values of the parameters
were caused by organic matter. High E. coli in the study
area revealed influence of human and animal fecal that coul