| Pesticides (µg/Kg soil) | Gléi | Wahala | Amakpapé | Limit values | |
| Herbicides | Atrazine | 0.149 | ND | 0.155 | 0.0002a |
| Simazine | ND | 0.051 | 0.103 | - | |
| Therbuthylazine | ND | ND | ND | - | |
| Insecticides | 2,4-DDT | ND | 0.257 | ND | 0.100a |
| 4,4-DDT | ND | ND | ND | 0.100a | |
| 2,4-DDE | ND | ND | ND | 0.100a | |
| 4,4-DDE | 0.262 | ND | ND | 0.100a | |
| Dieldrin | 0.669 | 1.160 | 0.660 | 0.500b | |
| Endrin | ND | 0.512 | ND | 0.040b | |
| Aldrin | ND | ND | ND | 0.060b | |
| Lindane [γ-HCH] | 0.259 | 0.628 | 0.672 | 0.050b | |
| α-Endosulfan | ND | ND | ND | 0.100b | |
| β-Endosulfan | 1.259 | 5.727 | ND | 0.100b | |
| Heptachlor | 0.489 | 0.733 | 1.243 | 0.700b | |
| Heptachlor epoxide | 0.991 | 0.928 | 1.633 | 0.0002b | |