| Name | Age | Club | Time | Splits | ||
| 1 | Lauren Doughty | 15 | Dun City Aqu | 1:16.76 | 36.44 | 1:16.76 |
| 2 | Amy Robertson | 15 | Unattached | 1:23.69 | 39.25 | 1:23.69 |
| 3 | Kirsten Duncan | 16 | St Thomas | 1:24.66 | 41.04 | 1:24.66 |
| 4 | Emily Horne | 16 | Perth City | 1:26.01 | 40.78 | 1:26.01 |
| 5 | Kirsty Bell | 15 | M/Whall | 1:30.67 | 42.13 | 1:30.67 |