Table 1.
The parameters used in calculation of integrated weight water quality index (IWQI).
| parameter | Unit | Cjp (variable's standard value in pure water) | Sj (WHO 2011) | Wj (integrated weight) |
|---|---|---|---|---|
| TDS | mg/L | 0 | 1000 | 0.045074 |
| pH | 7 | 7.5 | 0.045624 | |
| EC | µS/cm | 0 | 1500 | 0.043698 |
| Na | mg/L | 0 | 400 | 0.047656 |
| K | mg/L | 0 | 12 | 0.070666 |
| Mg | mg/L | 0 | 150 | 0.046403 |
| Ca | mg/L | 0 | 200 | 0.047419 |
| Mn | mg/L | 0 | 0.1 | 0.250271 |
| Fe | mg/L | 0 | 0.3 | 0.100279 |
| Cl | mg/L | 0 | 600 | 0.050539 |
| SO4 | mg/L | 0 | 400 | 0.047423 |
| HCO3 | mg/L | 0 | 200 | 0.054388 |
| NO3 | mg/L | 0 | 45 | 0.11145 |
| TH | mg/L | 0 | 500 | 0.03911 |
| ∑Wi = 1 |