| Similarity | Rank | |
|---|---|---|
| contaminant | 0.796 | 45441 |
| turbidity | 0.796 | 71435 |
| Giardia | 0.792 | 94447 |
| coli | 0.789 | 22100 |
| faecal | 0.779 | 82966 |
| fecal | 0.776 | 31060 |
| Escherichia | 0.773 | 66865 |
| microbiological | 0.769 | 64973 |
| effluent | 0.765 | 38366 |
| protozoa | 0.763 | 79516 |
| contaminants | 0.755 | 17549 |
| Pseudomonas | 0.754 | 74302 |
| aeruginosa | 0.749 | 82311 |
| microbial | 0.748 | 23898 |
| Staphylococcus | 0.747 | 51926 |
| ppb | 0.746 | 68647 |
| bacterial | 0.743 | 10255 |
| bacteria | 0.741 | 3971 |
| Coli | 0.737 | 80004 |
| O157 | 0.737 | 82113 |
| alkalinity | 0.736 | 59095 |
| microorganisms | 0.736 | 22248 |
| micro-organisms | 0.730 | 55794 |
| biofilm | 0.730 | 56244 |
| biofilms | 0.726 | 75409 |