Missouri Plumbers

Missouri requires plumbers to be 21 to become journeyman and 25 to become a master plumber, but that is not the only difference. Plumbing licenses are controlled by the local counties, which means that each jurisdiction has different requirements for licensure. To work in multiple areas, you will also need to have the appropriate license issued by each jurisdiction as there is no state plumbing license.

In general, to receive your journeyman license, you will need to have, in most areas, at least five years of an apprenticeship on your resume. You must be able to demonstrate that you know how to install and repair plumbing and drainage facilities. You must also be able to demonstrate knowledge of the appropriate health codes that are related to the position.

To become a master's level plumber, you must have an additional three years of training at the journeyman level under a master's level plumber. You must be able to demonstrate the ability to direct and teach other in advanced plumbing tasks an must be able to show the ability to design plumbing systems.

Licensure exams have to be taken in cities with a population of at least 15,000 residents. Fees, however, vary upon each jurisdiction, so be sure to contact local authorities if you have any questions on how to become a plumber in Missouri.


We currently have 1,166 listings for plumbers and plumbing contractors covering 294 cities in Missouri. Please select your city in Missouri to see the plumbers, sewer and drain cleaners, and other plumbing realted contractors in Missouri.