Brass corrosion as a source of lead and copper in traditional and all‐plastic distribution systems

The US Environmental Protection Agency's Lead and Copper Rule (LCR) attempts to minimize exposure to waterborne lead and copper by sampling water at the consumer's tap. The LCR assumes that the major long‐term sources of both elements are lead solder, copper plumbing, lead plumbing, and lead service lines and that brass plays only a transient role. This assumption was tested through a natural experiment. A number of houses using all‐plastic...