| Similarity | Rank | |
|---|---|---|
| septic_tank | 0.773 | 57145 |
| sewer_system | 0.694 | 51258 |
| storm_water | 0.673 | 71726 |
| stormwater | 0.671 | 37648 |
| sewage_system | 0.659 | 73638 |
| wastewater_treatment_plant | 0.644 | 59904 |
| sewage | 0.643 | 20240 |
| wastewater | 0.642 | 16254 |
| drainage_system | 0.640 | 46605 |
| water_system | 0.635 | 20594 |
| groundwater | 0.625 | 10207 |
| treatment_plant | 0.625 | 48607 |
| ground_water | 0.624 | 30977 |
| storm_drain | 0.621 | 74105 |
| waste_water | 0.613 | 36994 |
| stormwater_management | 0.612 | 98827 |
| sewer | 0.610 | 15057 |
| rain_barrel | 0.602 | 88491 |
| water_well | 0.600 | 50970 |
| surface_water | 0.596 | 17620 |
| rain_garden | 0.590 | 54446 |
| sewerage | 0.588 | 65854 |
| water_treatment_plant | 0.583 | 79968 |
| wastewater_treatment | 0.582 | 51114 |
| water_quality | 0.578 | 8567 |