The arena's court was covered with up to 10 inches of water Tuesday after a 30-inch water main broke nearby and sent water cascading onto campus.
Los Angeles fire spokeswoman Katherine Main says the men were helping pump water out of the home of UCLA's basketball team when they fell ill from generator exhaust Wednesday evening.
Two were taken to the hospital in fair condition and four were treated at the scene. Main says all of them were alert and breathing.
She says the equipment was turned off and the building was aired out.
There's no word yet on whether the de-watering operation has resumed.