| 污染程度 | 无污染 (Pjp ≤ 1) | 轻微污染 (1 < Pjp ≤ 29) | 轻度污染 (2 < Pjp ≤ 3) | 中度污染 (3 < Pjp ≤ 5) | 重度污染 (Pjp > 5) | 
| Cu (样品数,百分比%) | (0,0) | (0,0) | (1,6.667) | (7,46.667) | (7,46.667) | 
| Zn (样品数,百分比%) | (0,0) | (1,6.667) | (4,26.667) | (4,26.667) | (6,40) | 
| Ni (样品数,百分比%) | (15,100) | (0,0) | (0,0) | (0,0) | (0,0) | 
| Cd (样品数,百分比%) | (0,0) | (0,0) | (0,0) | (0,0) | (15,100) |