In its drip calculator, the U.S. Geological Survey measures one gallon as 15,140 drips.
So, a small drip of once every 10 seconds will grow to one full gallon of wasted water by the end of the day. A full year of dripping brings the water loss up to 347.2 gallons! But what if your leaky faucet is dripping faster – say, a drop every two seconds? At that rate, 2.9 gallons of water will go wasted by the end of the day. For the year, the total goes up to 1,041.5 gallons. If the drip is humming along at a drip every second, then the water waste climbs to 5.7 gallons a day, or 2,083 by the end of one year of drip-dropping.