Rescue workers found a Goodyear woman floating in her pool at about 2:30 p.m. on Sunday after a neighbor called 911.
Fire department officials said she was not breathing and didn’t have a heartbeat. Rescue workers treated her at the scene and said they were able to get a slight pulse from her.
The 58-year-old woman was taken to a West Valley hospital where she remains in critical condition. Officials do not know if she has suffered any brain damage or how long she was under water.
The woman has not been identified by officials but they said she lives alone in the Estrella Mountain community.
On Monday, Officials told CBS 5 News that a medical condition was most likely the cause.