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How to get a plumber license in Missouri
Requirements, license levels, and the issuing authority — sourced from Missouri's
official board.
Verified: Missouri has no statewide plumbing license. Licensing is municipal; state law (RSMo Ch. 341) provides qualification standards and an exam requirement for cities of 15,000+.
Issuing authority: None statewide — no Missouri state plumbing licensing board; plumber licensing is administered by local cities/counties. State statute (RSMo Chapter 341) sets baseline qualifications and mandates exams in larger cities.. Official page: https://revisor.mo.gov/main/OneSection.aspx?section=341.170
License levels in Missouri
Locally issued Journeyman Plumber and Master Plumber (by municipality)
Missouri plumber licensing at a glance
Requirements
Set locally. State statute (Ch. 341) establishes baseline qualifications (e.g., Master Plumber: 25+ with 3+ years as a licensed journeyman; Journeyman: 21+ with 5 years' apprentice experience) and requires journeyman/master certification examinations in cities of 15,000 or more population.
Reciprocity
N/A at state level; varies by municipality.
Renewal
Set by each local jurisdiction.
Notes
Verified: Missouri has no statewide plumbing license. Licensing is municipal; state law (RSMo Ch. 341) provides qualification standards and an exam requirement for cities of 15,000+.
Questions
Do you need a license to work as a plumber in Missouri?
Verified: Missouri has no statewide plumbing license. Licensing is municipal; state law (RSMo Ch. 341) provides qualification standards and an exam requirement for cities of 15,000+.
What plumber license levels does Missouri have?
The levels are Locally issued Journeyman Plumber and Master Plumber (by municipality).
How do you get licensed as a plumber in Missouri?
Set locally. State statute (Ch. 341) establishes baseline qualifications (e.g., Master Plumber: 25+ with 3+ years as a licensed journeyman; Journeyman: 21+ with 5 years' apprentice experience) and requires journeyman/master certification examinations in cities of 15,000 or more population.
Sources: revisor.mo.gov. Always confirm current requirements with the issuing authority.
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