definition
strict definition
plumbing contractor
A contractor responsible for assembling and installing the plumbing systems within a structure.
A plumbing contractor is the company which assembles and installs plumbing systems in a structure.
The contractor assembles the plumbing system and installs it in the structure. The work concerns the system as fitted at the property, rather than the manufacture of every product used to build it.
A pump manufacturer supplies pressure-producing machinery, and a drainage system manufacturer supplies fluid-removal systems or components. Plumbing contracting concerns installation work using such supplied equipment.