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Level of faecal contamination of drinking water sources in North Gondar zone, Ethiopia, 2016.
| Risk (FC counts (cfu/100ml)) | Frequency | Percentage |
| No risk (0) | 320 | 43.5 |
| Low (1–10) | 36 | 4.9 |
| Intermediate (11–100) | 315 | 42.8 |
| High (101–1000) | 65 | 8.8 |
| Very high (1000+) | 0 | 0 |
