Clay pipes were a common choice in ancient times. In the United States, they came to be used very early on and were still very popular until relatively recently. Clay pipes started being phased out in the 1960s and 1970s when plastic sewer pipe options such as ABS and PVC were developed.

When did builders stop using cast iron plumbing?

1980 In 1980, cast iron pipes were no longer the pipe of choice. Builders and plumbers replaced cast iron with rigid PVC (Polyvinyl Chloride plastic), which is easier to make, can be made quickly, is harder than other options, and has greater tensile strength.