Never try to break ice away that has formed on an outdoor faucet. This could pose a danger of cracking the faucet itself or the pipe that it is attached to. Instead, use hot water to remove the ice. Fill a pitcher or bucket with very warm or hot water from the house and pour this hot water over the outdoor faucet, being careful not to allow it to splash on you and cause a burn. It is a good idea to repair or replace the leaky faucet, or at least shut off the water supply to the faucet, in order to prevent the problem from occurring again in the future.