| Similarity | Rank | |
|---|---|---|
| water_treatment | 0.851 | 44454 |
| wastewater | 0.836 | 16254 |
| wastewater_treatment_plant | 0.802 | 59904 |
| waste_water | 0.760 | 36994 |
| treatment_plant | 0.741 | 48607 |
| desalination | 0.737 | 50200 |
| water_treatment_plant | 0.719 | 79968 |
| solid_waste_management | 0.717 | 88395 |
| waste_management | 0.704 | 16497 |
| water_management | 0.702 | 19218 |
| Wastewater | 0.698 | 85442 |
| sewage | 0.695 | 20240 |
| effluent | 0.694 | 39640 |
| treat_water | 0.687 | 93862 |
| water_quality | 0.684 | 8567 |
| stormwater | 0.675 | 37648 |
| stormwater_management | 0.672 | 98827 |
| water_system | 0.671 | 20594 |
| solid_waste | 0.671 | 32002 |
| storm_water | 0.670 | 71726 |
| pollution_control | 0.668 | 79900 |
| water_resource_management | 0.668 | 64165 |
| industrial_waste | 0.663 | 70885 |
| environmental_engineering | 0.659 | 79017 |
| water_utility | 0.658 | 65504 |