| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:09.13 | Summer Provincial Championships LC | 2025-07-24 |
| 100m Backstroke | 1:05.21 | OSC J.P. Fiset Invitational | 2025-12-11 |
| 100m Butterfly | 1:05.79 | Summer Provincial Championships LC | 2025-07-24 |
| 100m Butterfly | 1:02.34 | OSC J.P. Fiset Invitational | 2025-12-11 |
| 100m Freestyle | 57.05 | OSC J.P. Fiset Invitational | 2025-12-11 |
| 100m IM | 1:07.56 | 2025 Friesen Plastics LASC Fall Challenge | 2025-10-24 |
| 200m Freestyle | 2:16.01 | Summer Provincial Championships LC | 2025-07-24 |
| 200m Freestyle | 2:08.05 | 2025 Friesen Plastics LASC Fall Challenge | 2025-10-24 |
| 200m IM | 2:31.55 | Summer Provincial Championships LC | 2025-07-24 |
| 200m IM | 2:29.16 | 2026 Pronghorn Classic | 2026-03-13 |
| 400m Freestyle | 4:40.00 | Cascade Speed Meet 2025 Provincial Series #1 | 2025-11-08 |
| 50m Backstroke | 32.07 | Summer Provincial Championships LC | 2025-07-24 |
| 50m Backstroke | 29.98 | OSC J.P. Fiset Invitational | 2025-12-11 |
| 50m Breaststroke | 35.95 | 2026 Pronghorn Classic | 2026-03-13 |
| 50m Butterfly | 29.13 | Summer Provincial Championships LC | 2025-07-24 |
| 50m Butterfly | 27.73 | OSC J.P. Fiset Invitational | 2025-12-11 |
| 50m Freestyle | 26.88 | Summer Provincial Championships LC | 2025-07-24 |
| 50m Freestyle | 25.62 | 2026 Pronghorn Classic | 2026-03-13 |
Koop, JJ's top personal bests include 100m Backstroke (1:09.13), 100m Backstroke (1:05.21), 100m Butterfly (1:05.79), 100m Butterfly (1:02.34), 100m Freestyle (57.05).
Koop, JJ swims for LA Swim Club.
Koop, JJ has competed in 5 meets.