Calculation of WQI of water samplesin summer season of Chandlodia Lake.
Sr.No Parameter Observed Value (Vn) Standard Valus (Sn) Ideal Value (V10) Unit Weight (WN) Quality Rating (Qn) WnQn
1 Electrical conductivity (Ω/cm) 2.15 300 0 0.371 0.71 0.26
2 Total Dissolve Solid (mg/L) 1142 500 0 0.0037 228.4 0.84
3 pH 8.2 7.5 7 0.219 240 52.56
4 Alkalinity (mg/L) 204 120 0 0.0155 170 2.635
5 Tatal Hardness (mg/L) 335 300 0 0.0062 111.66 0.69
6 Calcium (mg/L) 80 75 0 0.025 106.66 2.66
7 Magnesium (mg/L) 36 30 0 0.061 120 7.32
8 Dissolved Oxygen (mg/L) 3.13 5 14.6 0.3723 119.47 44.48
9 Chloride (mg/L) 135 250 0 0.0074 54 0.39
10 Nitrate (mg/L) 6.3 45 0 0.0412 14 0.57
11 Biochemical Qxygen Demand (mg/L) 1.78 5 0 0.3723 35.6 13.25
          ΣWn= 1.4946 ΣQn = 1200.53 ΣWnQn= 125.697
WQI = 84.10076275
Table 5: Calculation of WQI of water samples in winter season of Chandlodia Lake.