Categories of water quality types and their index levels
| Water Quality Index level . | Water quality type . |
|---|---|
| 0–25 | Excellent water quality |
| 26–50 | Good water quality |
| 51–75 | Poor water quality |
| 76–100 | Very poor water quality |
| >100 | Unsuitable for drinking |
| Water Quality Index level . | Water quality type . |
|---|---|
| 0–25 | Excellent water quality |
| 26–50 | Good water quality |
| 51–75 | Poor water quality |
| 76–100 | Very poor water quality |
| >100 | Unsuitable for drinking |
Source: Ewaid & Abed (2017).