Research Article
Geochemical and Geophysical Study in a Degraded Area Used for Disposal of Sludge from a Water Treatment Plant
Table 3
Classification of the parameters by the geoaccumulation index, according to the degree of pollution.
| Classification | Class of | |
| Extremely polluted | 6 | >5 | Heavily to extremely polluted | 5 | >4 a 5 | Heavily polluted | 4 | >3 a 4 | Moderately to heavily polluted | 3 | >2 a 3 | Moderately polluted | 2 | >1 a 2 | Unpolluted to moderately polluted | 1 | >0 a 1 | Practically unpolluted | 0 | <0 |
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