The document discusses ways to reduce water waste from long showers among students. It notes that the average 5-minute shower uses 15-25 gallons of water, and showers longer than 10 minutes use around 40 gallons. Only 1% of the world's water is freshwater, so there is high demand for the limited supply. The proposed solution is to create a system that turns red after a certain number of gallons have been used as a nudge to encourage shorter showers without forcing the water to stop.