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 | P 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 |