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Exams · Certifications · Licensing

Journeyman Plumber Exam

Colorado: licenses: practice questions

Our Journeyman Plumber bank has 4 questions on this topic. Here are 4 of them with answers; the full mock exam draws from every topic, like the real one.

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Question 1 · Colorado

Under C.R.S. 12-155-108, what must a Colorado plumbing contractor be, or employ full-time?

  1. A licensed journeyworker plumber
  2. A master plumber in charge of all its plumbing work
  3. A registered water conditioning principal for all residential work
  4. A licensed professional engineer
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B. A master plumber in charge of all its plumbing work — 12-155-108(3).

Question 2 · Colorado

Since 1 July 2025, what does Colorado law call the plumber license between residential and master?

  1. Journeyman plumber
  2. Journeyworker plumber
  3. Plumbing technician
  4. Plumber II
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B. Journeyworker plumber — 12-155-108 and 12-155-109, as amended by HB 24-1344.

Question 3 · Colorado

Within how many days must a Colorado master plumber notify the board after ending their role with a plumbing contractor?

  1. 7 days
  2. 15 days
  3. 45 days
  4. 90 days, or by the next renewal
Show the answer

B. 15 days — 12-155-108(3).

Question 4 · Colorado

For how many plumbing contractors may a Colorado master plumber be responsible at one time?

  1. One
  2. Two
  3. Three
  4. Any number in the same county
Show the answer

A. One — 12-155-108(3).

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