| Sample location | As | Cd | Cr | Cu | Co | Fe | Mn | Ni | Pb | Zn | Σ HQ = HI |
| Vwei | 9.583 × 10−3 | 0 | 6.517 × 10−2 | 2.228 × 10−2 | 7.446 × 10−3 | 2.186 × 10−1 | 4.944 × 10−2 | 8.625 × 10−3 | 5.635 × 10−1 | 1.286 × 10−2 | 9.5748 × 10−1 |
| Bisichi1 | 1.725 × 10−2 | 7.36 × 10−2 | 8.625 × 10−2 | 5.103 × 10−2 | 6.181 × 10−3 | 1.370 × 10−1 | 7.541 × 10−2 | 2.818 × 10−2 | 4.304 × 10−1 | 5.478 × 10−2 | 9.6012 × 10−1 |
| Bisichi2 | 0 | 0 | 5.558 × 10−2 | 1.323 × 10−2 | 3.278 × 10−3 | 2.678 × 10−2 | 1.422 × 10−2 | 6.325 × 10−3 | 8.707 × 10−2 | 5.041 × 10−3 | 2.115 × 10−1 |
| Dunduma | 0 | 6.9 × 10−3 | 4.025 × 10−2 | 8.769 × 10−3 | 3.479 × 10−3 | 9.857 × 10−2 | 5.161 × 10−2 | 6.325 × 10−3 | 3.286 × 10−2 | 5.942 × 10−3 | 2.5470 × 10−1 |
| Zira | 0 | 0 | 5.367 × 10−2 | 1.481 × 10−2 | 2.818 × 10−3 | 4.575 × 10−2 | 2.549 × 10−2 | 5.75 × 10−3 | 5.421 × 10−2 | 3.718 × 10−3 | 2.0622 × 10−1 |
| Kuru Jenta1 | 0 | 6.9 × 10−3 | 5.367 × 10−2 | 2.487 × 10−2 | 7.676 × 10−3 | 1.599 × 10−1 | 8.822 × 10−2 | 8.625 × 10−3 | 9.857 × 10−2 | 1.278 × 10−2 | 4.6125 × 10−1 |
| Kuru Jenta2 | 1.533 × 10−2 | 3.22 × 10−2 | 8.433 × 10−2 | 3.809 × 10−2 | 4.370 × 10−3 | 3.085 × 10−1 | 4.980 × 10−2 | 1.61 × 10−2 | 2.514 × 10−1 | 2.147 × 10−2 | 8.2151 × 10−1 |
| Rahai | 0 | 0 | 4.792 × 10−2 | 9.775 × 10−3 | 7.776 × 10−4 | 6.90 × 10−3 | 7.894 × 10−3 | 5.175 × 10−3 | 1.643 × 10−2 | 2.568 × 10−3 | 9.7434 × 10−2 |
| Rassa1 | 2.491 × 10−2 | 3.335 × 10−2 | 3.546 × 10−1 | 6.512 × 10−2 | 2.111 × 10−1 | 1.65945 | 1.17730 | 4.198 × 10−2 | 1.399714 | 1.846 × 10−2 | 4.985952 |
| Rassa2 | 1.725 × 10−2 | 5.75 × 10−3 | 7.092 × 10−2 | 2.329 × 10−2 | 2.496 × 10−2 | 6.845 × 10−1 | 1.607 × 10−1 | 1.179 × 10−2 | 1.922 × 10−1 | 6.938 × 10−3 | 1.198292 |
| Gassa1 | 0 | 1.955 × 10−2 | 7.858 × 10−2 | 2.171 × 10−2 | 7.504 × 10−3 | 1.532 × 10−1 | 6.194 × 10−2 | 1.035 × 10−2 | 1.364 × 10−1 | 1.558 × 10−2 | 5.0477 × 10−1 |
| Gassa2 | 0 | 0 | 4.983 × 10−2 | 6.469 × 10−3 | 1.984 × 10−3 | 3.861 × 10−2 | 2.980 × 10−2 | 4.889 × 10−3 | 2.30 × 10−2 | 2.568 × 10−3 | 1.5715 × 10−1 |
| Britvic | 0 | 0 | 3.642 × 10−2 | 7.763 × 10−3 | 8.05 × 10−4 | 1.651 × 10−2 | 1.235 × 10−2 | 3.738 × 10−3 | 1.643 × 10−2 | 1.974 × 10−3 | 9.599 × 10−2 |
| Hwol Gassa | 0 | 6.9 × 10−3 | 5.175 × 10−2 | 1.452 × 10−2 | 3.134 × 10−3 | 6.358 × 10−2 | 2.420 × 10−2 | 6.613 × 10−3 | 4.271 × 10−2 | 6.095 × 10−3 | 2.1951 × 10−1 |
| Pol.BarrK B/Ladi | 0 | 0 | 4.025 × 10−2 | 9.344 × 10−3 | 7.48 × 10−4 | 8.625 × 10−3 | 1.344 × 10−2 | 4.60 × 10−3 | 2.3 × 10−2 | 2.952 × 10−3 | 1.0296 × 10−1 |
| Rakung | 0 | 1.035 × 10−2 | 6.517 × 10−2 | 2.00 × 10−2 | 8.108 × 10−3 | 1.513 × 10−1 | 4.096 × 10−2 | 8.913 × 10−3 | 1.971 × 10−1 | 9.277 × 10−3 | 5.112 × 10−1 |
| Kworos1 | 0 | 0 | 5.558 × 10−2 | 1.021 × 10−2 | 2.415 × 10−3 | 8.477 × 10−2 | 2.640 × 10−2 | 6.613 × 10−3 | 8.05 × 10−2 | 6.498 × 10−3 | 2.7299 × 10−1 |
| Kworos2 | 0 | 0 | 5.942 × 10−2 | 8.194 × 10−3 | 6.04 × 10−4 | 2.473 × 10−2 | 1.832 × 10−2 | 5.75 × 10−3 | 2.464 × 10−2 | 3.316 × 10−3 | 1.4497 × 10−1 |
| Kworos3 | 0 | 0 | 5.558 × 10−2 | 1.107 × 10−2 | 1.006 × 10−3 | 2.045 × 10−2 | 1.403 × 10−2 | 5.175 × 10−3 | 2.793 × 10−2 | 3.086 × 10−3 | 1.3833 × 10−1 |
| Pwamol1 | 0 | 0 | 7.667 × 10−2 | 1.826 × 10−2 | 1.754 × 10−3 | 2.857 × 10−1 | 2.165 × 10−2 | 1.236 × 10−2 | 1.15 × 10−2 | 6.133 × 10−3 | 4.3401 × 10−1 |
| Pwamol2 | 2.3 × 10−2 | 0 | 7.667 × 10−2 | 6.038 × 10−3 | 1.909 × 10−2 | 8.991 × 10−1 | 3.008 × 10−1 | 7.763 × 10−3 | 1.807 × 10−2 | 3.009 × 10−3 | 1.35349 |
| Chit | 0 | 0 | 6.325 × 10−2 | 3.163 × 10−3 | 2.588 × 10−3 | 1.870 × 10−1 | 2.503 × 10−2 | 6.325 × 10−3 | 8.214 × 10−3 | 1.476 × 10−3 | 3.9708 × 10−1 |
| Kassa | 0 | 0 | 5.942 × 10−2 | 7.763 × 10−3 | 1.248 × 10−2 | 3.162 × 10−1 | 1.690 × 10−1 | 8.05 × 10−3 | 8.214 × 10−3 | 2.913 × 10−3 | 5.8391 × 10−1 |