| Similarity | Rank | |
|---|---|---|
| Wastewater | 0.869 | 52649 |
| Sewer | 0.844 | 44938 |
| sewage | 0.820 | 15787 |
| Septic | 0.805 | 68920 |
| Waste | 0.805 | 13424 |
| Stormwater | 0.795 | 62618 |
| Disposal | 0.786 | 44203 |
| Landfill | 0.786 | 57827 |
| Groundwater | 0.771 | 66053 |
| Water | 0.771 | 2787 |
| Sanitation | 0.771 | 43413 |
| Pollution | 0.770 | 29306 |
| Drainage | 0.768 | 48557 |
| Sludge | 0.768 | 98368 |
| wastewater | 0.759 | 17337 |
| Sediment | 0.753 | 95198 |
| Remediation | 0.751 | 67735 |
| Sanitary | 0.744 | 63167 |
| Sump | 0.742 | 88119 |
| effluent | 0.739 | 38366 |
| Filtration | 0.726 | 63090 |
| Contaminated | 0.725 | 88403 |
| Reclamation | 0.723 | 54409 |
| Flooding | 0.720 | 61326 |
| Rainwater | 0.715 | 66981 |