[LAblondeGPhi]

The Gamma Phi house at UC- Santa Barbara had one when I was in college (early 2000s), but I believe it has since been filled in to make room for more patio area.

ETA: Couldn't find any photos of the pool, but I did find some comments from the UCSB Gamma Phi Facebook page where an alumna was asking where the pool went. A more recent alumna said it was removed circa 2006/07 because it needed repairs and wasn't being used.

The Theta Xi house at UCLA had one when I was in college as well. I don't know the status of it, but I recall one event where they placed a stage over the pool (probably cheap lumber from Home Depot) so a band could perform on top.