| Stations | Seasons | As | Cd | Cu | Ni | Pb | Zn |
| E1 | DS | <0.005 | 0.187 | 0.022 | 0.117 | 4.952 | 0.059 |
| RS | <0.005 | <0.0005 | 0.123 | <0.005 | <0.005 | <0.010 | |
| E2 | DS | 8.027 | <0.0005 | <0.005 | 0.116 | <0.005 | <0.010 |
| RS | 0.006 | 0.092 | 1.230 | <0.005 | <0.005 | 0.309 | |
| E3 | DS | 3.225 | <0.0005 | <0.005 | <0.005 | 2.602 | 0.231 |
| RS | <0.005 | <0.0005 | 1.100 | <0.005 | <0.005 | <0.010 | |
| E4 | DS | 13.933 | <0.0005 | <0.005 | <0.005 | 0.277 | <0.010 |
| RS | <0.005 | <0.0005 | 1.200 | <0.005 | <0.005 | <0.010 | |
| R1 | DS | <0.005 | 0.137 | <0.005 | <0.005 | <0.005 | <0.010 |
| RS | 5.500 | <0.0005 | 1.470 | <0.005 | 1.388 | 0.124 | |
| R2 | DS | <0.005 | <0.0005 | <0.005 | 0.139 | 0.034 | <0.010 |
| RS | 32.556 | <0.0005 | 2.117 | <0.005 | 0.663 | <0.010 | |
| WHO standards | 0.01 | 0.003 | 2 | 0.07 | 0.01 | 3 | |