Total and individual THMs and sum of 5 HAAs (μg/l) for plants categorised into each of three profiles by the ANOVA and cut-points methods
| Method | DBP | Profile 1: High TTHM*, high brominated (n = 1) | Profile 2: High TTHM, low brominated (n = 3) | Profile 3: Low TTHM, low brominated (n = 6) | |||
|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | ||
| ANOVA (n = 10) | TTHM | 115.7 | – | 82.3 | 1.21 | 30.2 | 8.5 |
| CHCl3 | 64.5 | – | 60.5 | 14.3 | 20.5 | 9.1 | |
| CHBrCl2 | 28.5 | – | 16.1 | 8.5 | 6.7 | 2.5 | |
| CHBr2Cl | 17.9 | – | 8.4 | 0.2 | 3.3 | 3.1 | |
| CHBr3 | 4.8 | – | 0.3 | 0.1 | 0.9† | 0.5 | |
| HAA5 | 104.0 | – | 46.0 | 18.9 | 21.5 | 17.7 | |
| DBP | Profile 1: High TTHM*, high brominated (n = 0) | Profile 2: High TTHM, low brominated (n = 3) | Profile 3: Low TTHM, low brominated (n = 13) | ||||
|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | ||
| *High TTHM includes all values ⩾80 μg/l. | |||||||
| †Value does not include non-detect results. | |||||||
| Cut-points (n = 16) | TTHM | 82.1 | 2.3 | 21.2 | 8.6 | ||
| CHCl3 | 62.1 | 8.3 | 14.6 | 8.8 | |||
| CHBrCl2 | 15.9 | 4.3 | 4.4 | 2.6 | |||
| CHBr2Cl | 4.0 | 3.7 | 2.6† | 2.4 | |||
| CHBr3 | 0.2 | 0.2 | 0.5† | 1.0 | |||
| HAA5 | 71.6 | 16.8 | 16.7 | 12.5 | |||