Pipes are at risk of freezing or bursting during extremely cold weather. Wind chill increases the risk. The water turns to ice inside of the pipe, expands then causes a blockage. The blockage puts such pressure on the plumbing system that it can cause the pipe to burst or crack in its weak areas. This is true even if the pipe is made out of plastic or metal, including steel. Even a small crack can cause a pipe to leak a startling amount of water every day. Some experts put this figure a 250 gallons. That much water can easily damage property or shut down a business. Moreover, it can cost a lot of money to repair.