At the 1930 British Empire Games in Hamilton, Ontario, Canada, there were two aquatics disciplines – swimming and diving. There were four diving events contested and eleven swimming events. The aquatics programme included the only women's events of the games.
These events were held at the Municipal Pool (now the Jimmy Thompson Memorial Pool), which was built specifically for these games. At that time, it was the best competition pool in the British Empire.[1]
| 3 m springboard | 147 | 138 | 127 | ||||
| 10 m platform | 90.6 | 83.3 | 82.3 |
| 3 m springboard | 90.1 | 89.7 | 88.7 | ||||
| 10 m platform | 39.3 | 38.3 | Only two entrants |
| 100 yd freestyle | 56.0 | 56.1 | |||||
| 400 yd freestyle | 4.39.8 | 4.45.8 | |||||
| 1500 yd freestyle | 18:55.4 | 19:41 | |||||
| 100 yd backstroke | 1:05.4 | 1:06 | 1:07 | ||||
| 200 yd breaststroke | 2.38.4 | 2.39.6 | 2:45 | ||||
| 4×200 yd freestyle relay |  CanadaBert Gibson Munroe Bourne George Burleigh James Thompson | 8:42.4 | Freddie Milton Norman Brooks Arthur Watts Joseph Whiteside | 8:43 | Only two teams entered |
| 100 yd freestyle | 1:03.0 | 1:07 | |||||
| 400 yd freestyle | 5:25 | 5:28 | |||||
| 100 yd backstroke | 1:15 | 1:17 | 1:18 | ||||
| 200 yd breaststroke | 2:54 [WR] | ||||||
| 4×100 yd freestyle relay | Joyce Cooper Doreen Cooper Olive Joynes Phyllis Harding | 4:32.8 | Canada Betty Edwards Irene Pirie Marjorie Linton Peggy Bailey | 4:33.0 | Cissie Stewart Ellen King Jean McDowell Jessie McVey | 4:37.0 |