The woman, whose identity was not available Friday, was in her 20s.
Tuan Nguyen II was one of three people to administer CPR to the woman. He said she may have been underwater for as long as 10 minutes but that she coughed up water after CPR.
“She had some air in her lungs,” Nguyen said. “Miracles happen every day.”
Nguyen, who also lives at the apartment complex, said the woman has a husband and children, and she appeared to be swimming with her children before the incident.
Panama City Police were investigating the incident.