Step 5: WQI is determined, using 
. After determining WQI values, the rating of the water quality was stated in reference to Table 2.
Table 2
WQI range and the type of water (Kizar 2018)
| WQI | Type of water |
|---|---|
| <50 | Excellent |
| 50–100 | Good |
| 100–200 | Poor |
| 2,000–300 | Very poor |
| >300 | Unfit for drinking |
| WQI | Type of water |
|---|---|
| <50 | Excellent |
| 50–100 | Good |
| 100–200 | Poor |
| 2,000–300 | Very poor |
| >300 | Unfit for drinking |