Supplementary material, Table A1 illustrates the calculated WQI values and water subclass classification. Obtained WQI classes were classified into 5 water subclasses as shown below. According to Table 8, there are 7% of samples are in the ‘Excellent’ category while 36, 28, 16, and 13% of samples are in the ‘Good’, ‘Fair’, ‘Marginal’ and ‘Poor’ water subclass categories, respectively.
Classification of water subclasses
| WQI value . | Water subclass . | No. of sampling sites . | Percentage (%) . |
|---|---|---|---|
| 0 < WQI ≤ 5 | Excellent | 9 | 7 |
| 5 < WQI ≤ 20 | Good | 44 | 36 |
| 20 < WQI ≤ 35 | Fair | 34 | 28 |
| 35 < WQI ≤ 55 | Marginal | 19 | 16 |
| 55 < WQI ≤ 100 | Poor | 16 | 13 |
| WQI value . | Water subclass . | No. of sampling sites . | Percentage (%) . |
|---|---|---|---|
| 0 < WQI ≤ 5 | Excellent | 9 | 7 |
| 5 < WQI ≤ 20 | Good | 44 | 36 |
| 20 < WQI ≤ 35 | Fair | 34 | 28 |
| 35 < WQI ≤ 55 | Marginal | 19 | 16 |
| 55 < WQI ≤ 100 | Poor | 16 | 13 |