Abstract: A fluid receptacle alarm assembly and/or kit comprising a fluid receptacle, an alarm module and at least one magnetic field source. The alarm module comprises an alarm, a magnetically-actuated switch, and a power source. The alarm module is attachable to a first surface of the fluid receptacle and the magnetic field source is attachable to a second surface of the fluid receptacle. A fluid quantity is receivable intermediate the first and second receptacle surfaces for adjusting the distance intermediate the first and second receptacle surfaces. The magnetic field source actuates the switch when a select alarm activation distance is adjustably met. The actuated switch electrically communicates the power source with the alarm. The energized alarm alerts a user to the fluid quantity in the fluid receptacle.