Plumbing

Since 1963 (the year CDA was established), more than 28 billion feet or about 5.3 million miles of copper plumbing tube has been installed in U.S. buildings. That's equivalent to a coil wrapping around the Earth more than 200 times. The current installation rate now exceeds a billion feet per year.
More than 9 out of 10 plumbers (94%) use copper tube in their own homes.