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IA · Plumbing

Plumbing in Iowa

What we confirmed about the path from apprentice to journeyman plumber in Iowa, with the official link for each item. Anything we couldn’t confirm is flagged.

How do I become a plumbing apprentice in Iowa?

Short answer:Who licenses this trade: State: one apprentice license covers plumbing, mechanical, HVAC-refrigeration, sheet metal and hydronic trades; journeyperson and master licenses. Apprentice registration: Yes. Apprentice license required, while in a US DOL-registered apprenticeship. Who can supervise an apprentice: A licensed master or journeyperson in the applicable discipline.

Last checked. Official source: dial.iowa.gov.

A plumber in work gloves fits a pipe connection

Licensing rules

Plumbing licensing rules
Who licenses this trade State: one apprentice license covers plumbing, mechanical, HVAC-refrigeration, sheet metal and hydronic trades; journeyperson and master licensesOfficial source: dial.iowa.gov
Apprentice registration Yes. Apprentice license required, while in a US DOL-registered apprenticeshipOfficial source: dial.iowa.gov
Experience before the journeyman exam Not yet confirmed with an official source, check the official link.
Apprentices per supervisor 1 apprentice to 1 journeyperson for a registered program unless a collective bargaining agreement says otherwiseOfficial source: dial.iowa.gov
Who can supervise an apprentice A licensed master or journeyperson in the applicable disciplineOfficial source: dial.iowa.gov

Last checked . 4 of 5 items confirmed against official sources; flagged items are still pending. Main board: Iowa Plumbing and Mechanical Systems Board (Department of Inspections, Appeals and Licensing).

Frequently asked questions

Who licenses plumbers in Iowa?

State: one apprentice license covers plumbing, mechanical, HVAC-refrigeration, sheet metal and hydronic trades; journeyperson and master licenses.Source: dial.iowa.gov

Do plumbing apprentices have to register in Iowa?

Yes. Apprentice license required, while in a US DOL-registered apprenticeship.Source: dial.iowa.gov

How many apprentices can one supervisor oversee in Iowa?

1 apprentice to 1 journeyperson for a registered program unless a collective bargaining agreement says otherwise.Source: dial.iowa.gov

Who can supervise a plumbing apprentice in Iowa?

A licensed master or journeyperson in the applicable discipline.Source: dial.iowa.gov

Plumbers and apprentices in Iowa

No profiles in Iowa yet. Every profile is opt-in, so the list starts empty and grows as people join.

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Next steps

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Electrical in Iowa · HVAC in Iowa · Iowa overview · Plumbing in every state

Plumbing in nearby states: Illinois · Minnesota · Missouri · Nebraska · South Dakota · Wisconsin