| Sites | Contamination Factor | |||
| Arsenic | Iron | Manganese | Lead | |
| Dunkwa | 3.667 | 0.061 | 1.156 | 4.304 |
| Praso | 4.143 | 0.080 | 1.370 | 1.797 |
| Akim | 4.190 | 0.055 | 1.096 | 2.899 |
| Barekese | 0.714 | 0.018 | 0.737 | 0.188 |
| Brenase | 7.047 | 0.078 | 0.703 | 0.710 |
| Adiembra | 3.814 | 0.056 | 1.073 | 2.188 |
| Deboase | 1.381 | 0.053 | 2.622 | 2.362 |
| Shamaa | 1.190 | 0.410 | 2.752 | 0.203 |