C.R.S. § 12-155-125: Plumbing contractors - requirement to display registration identification - master plumber of contractor.

(1) On and after July 1, 2025, a plumbing contractor shall display the following information on the plumbing contractor's vehicle or vehicles, billing materials, bid sheets, and website:

(a) The plumbing contractor's Colorado registration identification number; and

(b) The Colorado registration identification number for the master plumber attached to the plumbing contractor.