The girl had been swimming with a camp group from New Berlin when she was spotted by lifeguards not moving in the pool. The girl was rescued by lifeguards, who began to perform CPR before rushing her to the hospital.
The Wirth Park pool had been a popular place to be on July 3rd as people looked to the water to escape from the extreme heat.
The Wirth Park pool was shut down for the remainder of the day following the incident. The pool reopened on Wednesday, July 4th for scheduled for holiday hours.
You can read more about this story on Brookfield Patch.
Monitor FOX6 News and FOX6Now.com for updates on this developing story.