Everything WaterSense shares is good stuff, but rarely do people understand the magnitude of a leak(even a small one).
This is one of the best illustrations on what an even tiny leak can add up to!
Take a few minutes to look over the WaterSense website. Turn the television off and walk around your place, listening for any leaks. Check faucets, tub/shower, toilets and the often forgotten outside spigots. If the repair is outside your repairing ability, call a professional. 3000(or more) wasted gallons over the course of a year can't be good for your water bill and certainly isn't good for the environment!