| Event | Time | Date | Name | Meet | History |
|---|---|---|---|---|---|
| 50 Free | 20.62 | Feb. 17, 2022 | Ethan Lowder | CCIW Championships | |
| 100 Free | 45.97 | Feb. 18, 2023 | Ethan Lowder | CCIW Championships | |
| 200 Free | 1:42.01 | Feb. 18, 2022 | Mason McCauley | CCIW Championships | |
| 500 Free | 4:35.68 | Feb. 17, 2022 | Mason McCauley | CCIW Championships | |
| 1000 Free | 9:35.11 | March 1, 2021 | Mason McCauley | - | |
| 1000 Free | 9:35.11 | March 1, 2021 | Mason McCauley | Titan Cup | |
| 1650 Free | 15:52.58 | Feb. 19, 2022 | Mason McCauley | CCIW Championships | |
| 50 Back | 23.27 | Feb. 27, 2021 | Henry Moore | CCIW Cup Wheaton Saturday | |
| 100 Back | 50.94 | Feb. 17, 2011 | Michael Firth | College Conference of Illinois & Wisconsin Championships | |
| 200 Back | 1:50.73 | Feb. 18, 2012 | Michael Firth | College Conference of Illinois & Wisconsin Championships | |
| 50 Breast | 28.35 | Jan. 25, 2013 | Ross Tollefson | Wabash vs. Illinois Wesleyan | |
| 100 Breast | 58.26 | Feb. 23, 2008 | Ben Rock | Midwest Invitational Last Chance Meet | |
| 200 Breast | 2:07.18 | Feb. 13, 2008 | Ben Rock | - | |
| 50 Fly | 23.84 | Oct. 13, 2023 | Ethan Lowder | Lewis vs Illinois Wesleyan | |
| 100 Fly | 49.62 | Feb. 20, 2009 | Mike Kozak | CCIW Championships | |
| 200 Fly | 1:50.30 | March 20, 2009 | Mike Kozak | NCAA Division III Championships | |
| 100 IM | 56.49 | Dec. 4, 2015 | John Derrig | Carthage Winter Classic | |
| 200 IM | 1:52.00 | Feb. 20, 2020 | Dillon Cherwin | College Conference of Illinois & Wisconsin Championships | |
| 400 IM | 3:57.54 | Feb. 14, 2014 | Marcus Duval | College Conference of Illinois & Wisconsin Championships | |
| 200 Free Relay | 1:24.09 | Feb. 16, 2023 | Lowder, Kula, Kalenowski, Fogarty | CCIW Championships | |
| 400 Free Relay | 3:06.42 | Feb. 18, 2023 | Lowder, Kula, Fogarty, Kalenowski | CCIW Championships | |
| 800 Free Relay | 6:56.55 | Feb. 18, 2022 | McCauley, Kalenowski, Kula, Wagner | CCIW Championships | |
| 200 Medley Relay | 1:33.94 | Feb. 23, 2024 | Lowder, Tichy, Dilger, Fogarty | CCIW Championships | |
| 400 Medley Relay | 3:27.77 | Feb. 18, 2010 | Firth, Gilbert, Kozak, Mitchell | College Conference of Illinois & Wisconsin Championships |
