How to get a journeyman plumber license in Missouri
Missouri journeyman plumber licensing covers hours, prerequisites, exam path, fees, and renewal. Confirm current rules on the board source before you apply.
Verified on: 2026-09-14 · Board source
From the board
- Missouri Revisor of Statutes - Revised Statutes of Missouri, RSMo Section 341.170 Chapter 341 341.170.
- Qualifications of applicants for master plumber's license.
- Applicants for a master plumber's license shall be at least twenty-five years of age and shall have had three years or more experience as a licensed journeyman plumber theretofore licensed by any county or city operating under plumbing laws or regulations equal to the requirem…
- Board page: Missouri Revisor of Statutes - Revised Statutes of Missouri, RSMo Section 341.170
Requirements overview
- Missouri sets experience, education, and exam rules for journeyman plumber applicants
- Documented OJT or apprenticeship hours are common for journeyman / technician paths
- Master and contractor tracks usually add experience, exams, and firm paperwork
- Confirm current hour totals, affidavits, and fees on the state board before you apply
Exam
- See the Missouri plumbing exam guide for vendor, scheduling, and prep
- LicenseFlo helps with paperwork and reminders — we do not sit the exam
Renewals
- Most credentials renew on a fixed cycle with mandatory CE or training
- Roster watch → intake → assemble → sign → submit
Related: Exam · Renewal and CE
Have LicenseFlo do it
From $79 per event. Text once; we collect photos, assemble the packet, and send a one-tap signature.