| Name | Age | Club | Time | Splits | ||
| 1 | Katie Philips | 16 | St Thomas | 1:06.90 | 31.46 | 1:06.90 |
| 2 | Emily Horne | 16 | Perth City | 1:09.07 | 32.12 | 1:09.07 |
| 3 | Amy Robertson | 15 | Unattached | 1:09.95 | 31.73 | 1:09.95 |
| 4 | Erin Cummins | 15 | Perth City | 1:10.94 | 33.19 | 1:10.94 |
| 5 | Heather Ingram | 16 | St Thomas | 1:15.33 | 35.53 | 1:15.33 |
| 6 | Stephanie Strang | 15 | Dun City Aqu | 1:15.82 | 33.78 | 1:15.82 |