Abstract: A water level detecting and alarm system for informing a user when a water level within a bathtub has risen to or above a desired level. The system includes a housing having an opening at one end forming a lower lumen and a closed end opposite thereof. A securing means is attached to a side of the housing for adjustably securing to an interior surface of the bathtub corresponding to desirable water level. A partition within the housing is oriented traverse to a longitudinal axis of the housing. A tube projects in and through the partition coaxial with the longitudinal axis of the housing. A shaft has a flanged end and a lower end, and slidably projects through the tube. A float slidably projecting in the lower lumen of the housing for having a latitude similar to the water level within the bathtub. The float is secured to the lower end of the shaft for elevating and descending the shaft in a manner corresponding to the water level.