Class | Value | Soil quality level |
0 | Igeo < 0 | Uncontaminated |
1 | 0 < Igeo < 1 | Uncontaminated to moderately |
2 | 1 < Igeo < 2 | Moderately Contaminated |
3 | 2 < Igeo < 3 | Moderately to heavily contaminated |
4 | 3 < Igeo < 4 | Heavily Contaminated |
5 | 4 < Igeo < 5 | Heavily contaminated to Extremely Contaminated |
6 | Igeo > 5 | Extremely Contaminated |