| sewage → HasA → bacteria | 0.60 | |
| sewage → HasA → virus | 0.54 | |
| sewage → HasA → parasite | 0.34 | |
| sewage → HasA → solid | 0.32 | |
| sewage → HasA → germ | 0.27 | |
| sewage → HasA → fungus | 0.25 | |
| sewage → HasA → pharmaceutical | 0.25 | |
| sewage → HasA → faecal slurry | 0.25 | |
| sewage → HasA → sludge | 0.25 | |
| sewage → HasA → pesticide | 0.20 | |
| sewage → HasA → plastic | 0.16 |