Now that swimming heats are all done, these should be the new time standards for 2028. These are the faster of the 14th place finisher in the 2024 Olympic heats or the current qualification time for the 2024 Olympics. The good news about a slower pool is that the standards didn't change that much between the two Olympics.
Event
Men
Women
50m Freestyle
21.91
24.69
100m Freestyle
48.34*
53.61*
200m Freestyle
1:46.26*
1:57.26*
400m Freestyle
3:46.78*
4:07.90*
800m Freestyle
7:48.90
8:26.71*
1500m Freestyle
15:00.99*
16:09.09*
100m Backstroke
53.68
59.99*
200m Backstroke
1:57.50*
2:10.30
100m Breaststroke
59.49*
1:06.69
200m Breaststroke
2:09.68*
2:23.91*
100m Butterfly
51.58
57.82
200m Butterfly
1:55.78*
2:08.43*
200m Individual Medley
1:57.94*
2:11.47*
400m Individual Medley
4:12.50*
4:38.53*
However, if there's another big cut in quotas, there's a chance that World Aquatics will make the standards harder perhaps taking the time of the 12th place finisher in heats. If that were the case, then these would be the time standards:
Event
Men
Women
50m Freestyle
21.89
24.64
100m Freestyle
48.34*
53.61*
200m Freestyle
1:46.26*
1:57.26*
400m Freestyle
3:46.76
4:07.90*
800m Freestyle
7:47.91
8:26.71*
1500m Freestyle
14:55.61
16:09.09*
100m Backstroke
53.45
59.99*
200m Backstroke
1:57.50*
2:10.09
100m Breaststroke
59.49*
1:06.38
200m Breaststroke
2:09.68*
2:23.91*
100m Butterfly
51.43
57.57
200m Butterfly
1:55.78*
2:08.43*
200m Individual Medley
1:57.94*
2:11.47*
400m Individual Medley
4:12.50*
4:38.53*
* No change