A Perth girl who suffered a severe electric shock from a garden tap at her family's public housing property is unlikely to recover.

Denishar Woods, 11, has been at Princess Margaret Hospital since touching the tap at the Beldon property on Saturday night.

11-year-old Denishar Woods.

Doctors informed her family earlier this week she had sustained brain damage.

Further brain scan results on Friday morning confirmed Denishar's condition, with catastrophic injuries resulting in brain death.