In municipalities with a local plumbing inspector, testing of the plumbing shall be performed in the presence of a plumbing inspector.

• A. True
• B. False
• C. Only for residential buildings
• D. Only for large commercial installations

Answer: (A)

Having a local plumbing inspector means the testing of the plumbing must be performed in the inspector's presence. This ensures the inspector can observe that the system is tested properly, shows no leaks, and that piping, joints, fixtures, and traps are installed according to code with approved materials. The inspector’s presence provides an official record that the testing was conducted under supervision, supporting proper code compliance and quality control. This requirement applies across projects, not limited to a specific building type; it ensures consistent oversight whether for residential or commercial work. Choosing that testing can occur without an inspector or only for certain kinds of buildings would miss the purpose of on-site supervision to verify correct installation and testing procedures.