| No. | PAHs | # of rings | Carcinogenicity level | Locations found |
| 1 | Naphthalene | 2 | I | Moi/Voi, Moi/Voi (open), Makindu |
| 2 | Acenaphthylene | 3 | I | Moi/Voi, Moi/Voi (open), Makindu |
| 3 | Acenaphthene | 4 | I | Moi/Voi, Moi/Voi (open), Makindu |
| 4 | Fluorene | 3 | I | Moi/Voi, Moi/Voi (open), Makindu, Isiolo |
| 5 | Phenanthrene | 3 | III | Moi/Voi, Moi/Voi (open), Narok, Makindu, Isiolo |
| 6 | Anthracene | 3 | I | Moi/Voi, Narok, Makindu, Kitale |
| 7 | Fluoranthene | 4 | I | Moi/Voi, Moi/Voi (open), Makindu, Isiolo |
| 8 | Pyrene | 4 | III | Moi/Voi, Moi/Voi (open), Makindu, Isiolo |
| 9 | Chrysene | 4 | III | All |
| 10 | Benzo(a)anthracene | 5 | II | Moi/Voi, Moi/Voi (open), Makindu, Isiolo |
| 11 | Benzo(b)Fluoranthene | 5 | II | Moi/Voi, Moi/Voi (open), Makindu, Isiolo |
| 12 | Benzo(k)Fluoranthene | 5 | II | Moi/Voi (open) |
| 13 | Benzo(a)pyrene | 5 | III | None |
| 14 | Indeno(1,2,3-cd)pyrene | 6 | III | None |
| 15 | Dibenzo(a,h)anthracene | 5 | II | None |
| 16 | Benzo(g,h,i)perylene | 6 | II | Isiolo |