| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Freestyle | 1:48.11 | AA Age Group Development Meet & Nova Tech #4 C | 2026-02-14 |
| 100m IM | 2:10.24 | AA AGD Meet & Nova Tech #3 Central | 2026-01-24 |
| 50m Backstroke | 59.24 | Nova Tech Aqua Kids #2 Central | 2025-12-06 |
| 50m Breaststroke | 1:06.34 | AA AGD Meet & Nova Tech #3 Central | 2026-01-24 |
| 50m Butterfly | 1:04.13 | AA Age Group Development Meet & Nova Tech #4 C | 2026-02-14 |
| 50m Freestyle | 52.21 | AA AGD Meet & Nova Tech #3 Central | 2026-01-24 |
Herman, William's top personal bests include 100m Freestyle (1:48.11), 100m IM (2:10.24), 50m Backstroke (59.24), 50m Breaststroke (1:06.34), 50m Butterfly (1:04.13).
Herman, William swims for Halifax Trojan Aquatic Club.
Herman, William has competed in 4 meets.