Abstract: A bath overflow alarm comprised of a housing having a pair of slots formed through a lower end thereof. The housing has a waterproof battery chamber therein for active receipt of a battery. The housing is adapted for securement to a bathtub. A pair of water contacts are secured within the housing. An alarm mechanism is secured within the housing disposed above the pair of water contacts. Once water enters into the housing through the slots, the water contacts signal the alarm mechanism which will alert a person as to a dangerous water level.