PAC 12 Rules the pool
Well, in this year's NCAA's for DI men, PAC 12 teams finished 1st, 3rd, 4th and 7th (w/ Texas in 2nd).
As for the women in DI, the PAC 12 teams finished 1st, 3rd, 4th, 5th and 10th.
I think that pretty well defines where the PAC 12 stands vis a vis other conferences in swimming. Best teams, most depth.