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Components used for PIG computation.
| Parameters (C) | Unit | Relative Weight (Rw) | Weight Parameter (Wp) | Standard Value (Ds) |
|---|---|---|---|---|
| pH | – | 3 | 0.08 | 8.5 |
| TDS | mg/L | 5 | 0.14 | 500 |
| Cl− | mg/L | 4 | 0.12 | 250 |
| Iron | mg/L | 4 | 0.12 | 0.3 |
| SO42- | mg/L | 5 | 0.14 | 200 |
| NO3− | mg/L | 5 | 0.14 | 45 |
| Na+ | mg/L | 4 | 0.12 | 200 |
| K+ | mg/L | 1 | 0.03 | 12 |
| Ca2+ | mg/L | 2 | 0.05 | 75 |
| Mg2+ | mg/L | 2 | 0.05 | 30 |
| ∑RW = 35 | ∑WP = 1.00 |
