| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 2:09.67 | Border City Invitational 2025 | 2025-12-05 |
| 100m Breaststroke | 2:10.78 | GHAC Super Fun Development Series #2 | 2026-02-14 |
| 100m Freestyle | 2:00.12 | FinsUp 2 | 2025-11-23 |
| 50m Backstroke | 56.47 | GHAC Super Fun Development Series #2 | 2026-02-14 |
| 50m Breaststroke | 59.85 | GHAC Super Fun Development Series #2 | 2026-02-14 |
| 50m Butterfly | 1:11.49 | Border City Invitational 2025 | 2025-12-05 |
| 50m Freestyle | 55.82 | Border City Invitational 2025 | 2025-12-05 |
Karpus, Julia's top personal bests include 100m Backstroke (2:09.67), 100m Breaststroke (2:10.78), 100m Freestyle (2:00.12), 50m Backstroke (56.47), 50m Breaststroke (59.85).
Karpus, Julia swims for Windsor Aquatic ClubWA.
Karpus, Julia has competed in 5 meets.