INDEX | Range | Classification | SN | % |
DC | <10 | low degree of contamination factor | 20 | 95.2 |
10 - 20 | moderate degree of contamination | 1 | 4.8 | |
EF | 2- 5 | Moderate enrichment | 2 | 9.52 |
5 - 20 | Significant enrichment | 10 | 47.62 | |
20 - 40 | Very high enrichment | 9 | 42.86 | |
Er | <40 | Low potential risk | 21 | 100 |
RI | <150 | Low ecological risk | 21 | 100 |
PLI | <1 | No pollution | 21 | 100 |
Igeo | 0 - 1 | Unpolluted to moderately polluted by | Pb, V, Cr, Co, As, Cd, Pb | |
>5 | Extremely polluted by | Mn, Fe, Ni, Cu, Sr, Zn, Ba |