Smart water conservation systems are described herein, as are methods of using the same. In some embodiments, the systems can comprise a flow assembly configured to discharge fluid received from a fluid source to a shower area at a variable flow rate, the flow assembly comprising a flow path and one or more valves positioned along the flow path. In some embodiments, the systems can comprise a proximity sensor system comprising one or more proximity sensors, the proximity sensor system being configured to detect a person's proximity to the smart water conservation system. In some embodiments, the systems can comprise a controller configured to control operation of the smart water conservation system based at least in part on signals received from the proximity sensor system. In some embodiments, the controller can be configured to adjust the one or more valves in response to signals received from the proximity sensor system to vary the flowrate at which fluid is discharged from an output of the smart water conservation system.