My approach is simple in that all that I am proposing is that something be added to what the dorms currently have so that students no longer waste any more water than is necessary. Looking back, however, instead of using a motion sensor (which in my opinion is not efficient or practical) use a sensor that is activated when the water begins running. Once the sensor is activated, a timer which is set at a default amount of time will also start. After the timer reaches the end of it's limit, the water is then turned off automatically.