Table 2.
The minimum and maximum microbial concentrations present in the positive water and biofilm samples.
| Microbes | Minimum concentration | Maximum concentration |
|---|---|---|
| Hand basin water (n = 67) | ||
| Legionella DNA (GU/L) | 1 × 103 | 1.5 × 106 |
| VBNC Legionella (GU/L) | 2.5 × 102 | 6.5 × 105 |
| L. pneumophila DNA (GU/L) | 3.5 × 102 | 9 × 104 |
| VBNC L. pneumophila (GU/L) | 6 × 102 | 8.5 × 104 |
| Vermamoeba vermiformis (GU/L) | 7.5 × 102 | 7.5 × 107 |
| Acanthamoeba (GU/L) | 1 × 103 | 5 × 103 |
| Heterotrophic plate count (CFU/L) | 10 | 1.5 × 105 |
| Shower water (n = 53) | ||
| Legionella DNA (GU/L) | 9 × 102 | 7 × 104 |
| VBNC Legionella (GU/L) | 3.5 × 102 | 2.5 × 104 |
| L. pneumophila DNA (GU/L) | 3.5 × 102 | 9.5 × 103 |
| VBNC L. pneumophila (GU/L) | 70 | 4.5 × 103 |
| Vermamoeba vermiformis (GU/L) | 1 × 103 | 4 × 107 |
| Acanthamoeba (GU/L) | 0 | 0 |
| Heterotrophic plate count (CFU/L) | 10 | 1.5 × 105 |
| Tap faucet biofilm (n = 46) | ||
| Legionella DNA (GU) | 1 × 104 | 3.5 × 105 |
| VBNC Legionella (GU) | 1.5 × 102 | 3 × 104 |
| L. pneumophila DNA (GU) | 7.5 × 102 | 1.5 × 104 |
| VBNC L. pneumophila (GU) | 1 × 102 | 1 × 104 |
| Vermamoeba vermiformis (GU) | 1 × 103 | 1 × 106 |
| Acanthamoeba (GU) | 4.5 × 103 | 8 × 103 |
| Heterotrophic plate count (CFU) | 15 | 7.5 × 104 |