| Event | Time | Date | Name | Meet | History |
|---|---|---|---|---|---|
| 50 Free | 20.79 | Feb. 17, 2018 | Ryan Linnihan | WIAA Boys Division 1 State Championships | |
| 100 Free | 45.83 | Feb. 17, 2018 | Ryan Linnihan | WIAA Boys Division 1 State Championships | |
| 200 Free | 1:40.25 | Feb. 17, 2018 | Michael Linnihan | WIAA Boys Division 1 State Championships | |
| 500 Free | 4:34.26 | Feb. 20, 2016 | Connor Rumpit | Wisconsin Boys Division 1 State Championships | |
| 100 Back | 53.55 | Feb. 20, 2016 | Tomer Korabelnikov | Wisconsin Boys Division 1 State Championships | |
| 100 Breast | 57.57 | Feb. 17, 2018 | Samuel Kult | WIAA Boys Division 1 State Championships | |
| 100 Fly | 53.89 | Feb. 18, 2017 | Joseph Decker | Wisconsin Boys Division 1 State Championships | |
| 200 IM | 1:54.34 | Feb. 20, 2016 | Ben Attenberger | Wisconsin Boys Division 1 State Championships | |
| 200 Free Relay | 1:25.32 | Feb. 17, 2024 | Bergin, Smith, Thomas, Loppnow | WIAA Boys Division 1 State Championship | |
| 400 Free Relay | 3:09.17 | Feb. 17, 2024 | Bergin, Smith, Hou, Loppnow | WIAA Boys Division 1 State Championship | |
| 200 Medley Relay | 1:36.71 | Feb. 17, 2024 | Thomas, Dinusson-Wiger, Hou, Smith | WIAA Boys Division 1 State Championship |
