Class WQI Value Status of Water Heavily Polluted 0 – 24 Unsuitable for All Purposes Poor 25 – 49 Special Treatment (Special Treatment) Fair 50 – 74 Needs Treatment (Filtration & Disinfection) Good 75 – 94 Acceptable Excellent 95-100 Pristine Quality

Table 2: WQI and corresponding class and status of water quality [29,31].