| Similarity | Rank | |
|---|---|---|
| sewage | 0.852 | 15787 |
| sewer | 0.796 | 13245 |
| wastewater | 0.748 | 17337 |
| sewers | 0.711 | 32294 |
| Sewage | 0.706 | 66452 |
| potable | 0.703 | 38281 |
| stormwater | 0.684 | 26586 |
| effluent | 0.679 | 38366 |
| drainage | 0.674 | 10638 |
| sanitary | 0.665 | 22968 |
| municipal | 0.658 | 8336 |
| septic | 0.657 | 22341 |
| reclamation | 0.656 | 37715 |
| sanitation | 0.655 | 16338 |
| Wastewater | 0.655 | 52649 |
| incinerator | 0.651 | 60101 |
| catchment | 0.650 | 32983 |
| Sewer | 0.649 | 44938 |
| drains | 0.644 | 17106 |
| desalination | 0.643 | 51084 |
| hydro | 0.639 | 27371 |
| sludge | 0.626 | 25075 |
| infrastructural | 0.625 | 52974 |
| rainwater | 0.621 | 23331 |
| groundwater | 0.619 | 17131 |