Plumbing, for the purpose of this chapter, is hereby defined as follows:
B.
The construction, connection to or alteration of any drain, soil or waste pipe to carry domestic sewage, stormwater or industrial waste from a point three feet outside of the foundation walls of any building to the sewer lateral at the curb or other disposal terminal, including the private sewage disposal or treatment plant. This definition does not include minor repairs to faucets and the removal of stoppages in soil or waste pipes.