Mitgating lead in copper alloys for drinking water applications

The need to replace lead in copper alloys for drinking water applications is discussed. Lead is immiscible in copper and its alloys, and it forms discrete globules that are retained when the metal solidifies. Non leaded brass castings are an important new approach to reduce lead in drinking water. Metal treatments are now commercially available that remove the surface lead in contact with potable water, while still maintaining the existing base metal characteristics.