| Drain/Canal Sym. | Contamination Factor (Cfi) of Heavy Metal Pollution Water | |||||||||
| Cd | Co | Cr | Cu | Fe | Li | Mn | Ni | Pb | Zn | |
| DA | 1 | −0.98 | −0.74 | −1.00 | −1.00 | −0.99 | −0.96 | −0.93 | −0.97 | −0.96 |
| Polluted | Safe | Safe | Safe | Safe | Safe | Safe | Safe | Safe | Safe | |
| CD | 1 | −0.98 | −0.74 | −0.99 | −1.00 | −0.97 | −0.99 | −0.93 | −0.97 | −0.93 |
| Polluted | Safe | Safe | Safe | Safe | Safe | Safe | Safe | Safe | Safe | |
| DD | 0.98 | −0.98 | −0.75 | −0.99 | −0.95 | −0.98 | −0.94 | −0.93 | −0.98 | −0.90 |
| Risky | Safe | Safe | Safe | Safe | Safe | Safe | Safe | Safe | Safe | |
| DK | −0.88 | −0.98 | −0.75 | −1.00 | −1.00 | −0.97 | −0.97 | −0.93 | −1.00 | −0.94 |
| Safe | Safe | Safe | Safe | Safe | Safe | Safe | Safe | Safe | Safe | |
| DY | −0.88 | −0.98 | −0.75 | −0.99 | −1.00 | −0.95 | −0.99 | −0.97 | −0.98 | 0.95 |
| Safe | Safe | Safe | Safe | Safe | Safe | Safe | Safe | Safe | Risky | |