Table 2.
Overall mean total coliform and faecal coliform counts of rural community drinking water sources in the Guto Gida district.
| Parameters | Water sources | ||||
|---|---|---|---|---|---|
| Unprotected well | Unprotected spring | Protected well | Protected spring | p value | |
| n | 8 | 8 | 8 | 8 | — |
| TC (CFU/100 mL) ± SE | 51.4 ± 25.1a | 41.3 ± 17.6a | 6.62 ± 4.10b | 18.25 ± 8.4b | <0.01 |
| FC (CFU/100 mL) ± SE | 11.46 ± 6.16a | 10.4 ± 5.86a | 1.50 ± 1.10b | 1.84 ± 2.21b | <0.01 |
Data are average of 8 samples; SE: standard error; numbers indicated by the same letter superscripts within the same row do not vary significantly by Duncan's multiple range test at p < 0.05; TC: total coliform; FC: faecal coliform.