| Sample Site | Water VLP mL−1 (105) | Retentate VLP mL−1 (105) | Recovery efficiency (%) |
| Little Hot Creek (LHC) | 1.74 ± 1.46 | 669.4 ± 212.1 | 63.3 |
| Paoha Island (PI) | 0.14 ± 0.05 | 66.0 ± 39.9 | 74.4 |