A dripping faucet is very annoying. It can also cause your water bill to increase. Most of all it waste a lot of water. So what causes this drip, drip, drip? The o-ring of the faucet may be worn out. The washer may be worn out or not installed correctly. Sometimes the leak may be more serious and caused by a broken pipe. Your local plumber can locate the problem and correct the problem quickly so you no longer have to listen to the drip..drip..drip..