The deceased, all females, were returning to their native village in neighbouring Krishna district after attending a function when the SUV they were travelling in lost control and plunged into a roadside pond, police said.
The driver of the vehicle was suspected to be in an inebriated condition and this led to the mishap, they said.
The driver, however, jumped out of the vehicle in time and saved himself. However, police later took him into custody.
Two other passengers in the ill-fated SUV had a providential escape.
YSR Congress president Y S Jaganmohan Reddy expressed grief over the accident and conveyed his sympathies to the bereaved family.
Deputy Chief Minister N Chinarajappa, who handles home portfolio, spoke to the West Godavari district superintendent of police and enquired about the accident.