Brown’s husband, Nick Gordon and a friend found her in the tub in the morning and started CPR, the Roswell Police Department said in a statement.
Police and rescue personnel arrived at the home at 10:25 a.m. and performed “life-saving measures” before Brown, 21, was brought to the nearby North Fulton Hospital.
The incident comes less than two weeks before the third anniversary of her mother’s death.
Houston was found submerged in a bathtub in a Beverly Hills, California, hotel on Feb. 11, 2012.
She was later pronounced dead.
Bobbi Kristina Brown is also the daughter of R&B singer, Bobby Brown.