Table 3.
Risk level classification of rural community's drinking water from unprotected and protected sources according to WHO [16].
| Source | n | Total coliform | Faecal coliform | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 0 | 1–10 | 11–100 | >100 | 0 | 1–10 | 11–100 | >100 | ||
| Unprotected well (%) | 8 | 0 | 0 | 87.5 | 12.5 | 12.5 | 37.5 | 50 | 0 |
| Protected well (%) | 8 | 0 | 12.5 | 87.5 | 0 | 25 | 62.5 | 12.5 | 0 |
| Unprotected spring (%) | 8 | 0 | 0 | 100 | 0 | 12.5 | 50 | 37.5 | 0 |
| Protected spring (%) | 8 | 0 | 25 | 75 | 0 | 37.5 | 62.5 | 0 | 0 |
Bacterial colonies <1, “very low risk”; 1–10, “low risk”; 11–100, “medium risk”; >100, “high risk” or “very high risk,” n: number of water samples analyzed.