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International Journal of Microbiology
/
2020
/
Article
/
Tab 2
/
Research Article
Escherichia coli
as a Tool for Disease Risk Assessment of Drinking Water Sources
Table 2
Comparison of
E. coli
counts (MPN/100 ml) in the various water sources (SD = standard deviation, df = degree of freedom, Min = minimum, and Max = maximum).
Water sources
Dry season
Wet season
value
Mean ± SD
Min
Max
df
Mean ± SD
Min
Max
df
Bore hole
0.63 ± 0.74
0
2
7
1 ± 0.76
0
2
7
0.090
Canal
47.67 ± 16.04
31
63
2
59.67 ± 45.08
23
110
2
0.280
Dam
38.07 ± 30.71
7
110
14
39.87 ± 19.76
12
79
14
0.350
Hand-dug well
0.93 ± 0.80
0
2
14
1.47 ± 1.06
0
4
14
0.001
River
0 ± 0
0
0
2
4.33 ± 2.52
2
7
2
0.050
Stream
15.06 ± 13.59
0
33
16
20.77 ± 11.05
0
31
16
0.020