| Similarity | Rank | |
|---|---|---|
| effluent | 0.909 | 38366 |
| sewage | 0.886 | 15787 |
| stormwater | 0.871 | 26586 |
| Wastewater | 0.861 | 52649 |
| groundwater | 0.847 | 17131 |
| dewatering | 0.831 | 87432 |
| desalination | 0.815 | 51084 |
| potable | 0.801 | 38281 |
| aquifer | 0.785 | 40456 |
| digester | 0.773 | 85063 |
| chlorination | 0.769 | 98665 |
| tailings | 0.764 | 49890 |
| landfill | 0.760 | 16597 |
| Sewage | 0.759 | 66452 |
| NPDES | 0.759 | 98845 |
| sludge | 0.753 | 25075 |
| aquifers | 0.751 | 48296 |
| Stormwater | 0.751 | 62618 |
| sewer | 0.748 | 13245 |
| sewerage | 0.748 | 52330 |
| septic | 0.744 | 22341 |
| slurry | 0.743 | 39586 |
| gasification | 0.742 | 64900 |
| reclamation | 0.741 | 37715 |
| disinfection | 0.741 | 42785 |