| Statistics | Potential Ecological Hazard Factor | RI① | ||||||
| Pb | Cd | As | Zn | Ni | Cu | Hg | ||
| minimum | 2.3 | 50.68 | 3.91 | 0.75 | 1.9 | 0.45 | 15.34 | 75.33 |
| maximum value | 65.1 | 444.29 | 49.86 | 3.02 | 10.07 | 4.23 | 137.29 | 713.86 |
| Overall average | 11.55 | 97.67 | 14.29 | 1.61 | 4.62 | 1.45 | 68.97 | 200.16 |
| Level of risk | Low | Higher | Low | Low | Low | Low | Medium | Medium |