WQI Range | Percentage of samples (2015) | Percentage of samples (1999) | Quality |
50< | 12.5 | 0 | Excellent |
50 - 100 | 56.25 | 87.5 | Good |
100 - 200 | 25 | 12.5 | Poor |
200 - 300 | 0 | 0 | Very poor |
>300 | 6.25 | 0 | Unsuitable for drinking |