A small water leak may seem harmless, but these itty-bitty drops of water can lead to up to 3,000 gallons of wasted water per year. While the easiest way to fix these leaks is to hire a plumber, sometimes you can discover them during off-hours or during particularly busy times. Instead of turning off the main water valve for the entire house, do a temporary fix. At the home improvement store, look for silicone repair tape, which is designed to mold around the leak and create a temporary seal for small holes. It will stop the leak and give you a few days before you need a professional to come and fix it.