Can a child drown after accidentally swallowing a large amount of water in the bathtub?

Certainly!: Drowning accident in the bathtub involving unattended young children is not too uncommon.

Swallowing water: Hello. After swallowing a large amount of bath water, it is unlikely that drowning will occur. Unless the child aspirates or vomits this water up while sleeping, he/she should be fine. Remember that small children and toddlers could drown in an inch of water so please don't allow your child to be in the tub unattended. Accidents can happen in a split second so prevention is always the best policy.

Drowning: Accidental drowning can happen in seconds.