| Similarity | Rank | |
|---|---|---|
| Stormwater | 0.878 | 62618 |
| Sewage | 0.869 | 66452 |
| wastewater | 0.861 | 17337 |
| Groundwater | 0.844 | 66053 |
| Landfill | 0.820 | 57827 |
| Remediation | 0.816 | 67735 |
| Sewer | 0.806 | 44938 |
| Waste | 0.804 | 13424 |
| Reclamation | 0.803 | 54409 |
| Sanitation | 0.790 | 43413 |
| Sediment | 0.788 | 95198 |
| Disposal | 0.786 | 44203 |
| Sanitary | 0.782 | 63167 |
| stormwater | 0.777 | 26586 |
| effluent | 0.777 | 38366 |
| Filtration | 0.775 | 63090 |
| Irrigation | 0.774 | 40766 |
| NPDES | 0.773 | 98845 |
| Drainage | 0.771 | 48557 |
| Water | 0.763 | 2787 |
| Septic | 0.750 | 68920 |
| Aquifer | 0.745 | 88850 |
| Pollution | 0.744 | 29306 |
| sewage | 0.735 | 15787 |
| DEQ | 0.734 | 97500 |