Abstract: A control system for filling a bathtub which automatically shuts off the bathtub faucet when the water has reached a desired level, by detecting a volume of water that has passed through the dispensing pipe or a level of water in the bathtub. In the preferred embodiment a timer is provided to automatically shut off the bathtub faucet after a preset time interval, as a backup or as an independent filling regulator. In one embodiment a temperature sensor or timer is provided to adjust the flow of hot water and cold water as necessary to maintain a constant temperature which has been set by the user. In another embodiment one or more timers are provided to control the flow of hot water and cold water separately as necessary to reach the desired temperature.