Free Practice Questions for FL Plumber

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VideoFree Journeyman Plumber Practice Test by State 2026: 4,600+ QuestionsThis exam ArticleFree Journeyman Plumber Practice Test by State 2026: 4,600+ Questions24 min read ArticleHow to Become a Plumber in 2026: License, Salary by State & Career Path16 min read

Exam Review

Key Facts: FL Plumber Exam

Local authority

Journeyman Licensing

Prov Florida CIB

Varies locally

Format / Passing Requirement

Local licensing authority

80 / 3 hours

Escambia Example Only

Prov Escambia 2023-edition Journeyman Plumber description

$90; may vary

Prov Local Test Fee

General Florida CIB June 24, 2026

Confirm the local journeyman license and exact exam before registering. For example, Prov’s Escambia County January 21, 2026 bulletin lists an 80-question, three-hour 2023-edition Journeyman Plumber test using Florida Building Code — Plumbing 2023. Other jurisdictions may differ; these numbers and references must not be generalized statewide.

Sample FL Plumber Practice Questions

Try these sample questions to review concepts for the FL Plumber exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 395+ question experience with AI tutoring.

1Under the Florida Plumbing Code (FPC), what is the minimum size of a building sewer?

A.2 inches

B.3 inches

C.4 inches

D.6 inches

Explanation: Under the Florida Building Code — Plumbing (based on the IPC), building drains and building sewers are sized from Table 710.1(1). In practice and on Florida plumbing exams, the minimum building sewer size used for sizing questions is 4 inches. A building drain serving a water closet must be at least 3 inches (FLPC), but the building sewer run to the public sewer or private disposal system is typically a minimum of 4 inches.

2The Florida Plumbing General Trade Knowledge exam includes an isometric drawing portion. What does this portion require candidates to do?

A.Draw plumbing fixtures freehand without a floor plan

B.Produce five plumbing isometric drawings from floor plans that are graded on legibility, orientation, flow, angles, piping, labeling, vents, and fixtures

C.Use architectural CAD software to generate 3D models

D.Create full construction blueprints for an entire building

Explanation: Per the DBPR Plumbing Candidate Information Booklet (const_p_cib.pdf), the morning session includes 5 isometric drawings worth up to 10 points each. Graders score legibility, orientation, flow direction, 30-60-90 angles, piping, labeling, vents, and fixtures. Candidates must DRAW the isometrics from floor plans, not merely interpret printed diagrams.

3Under the FPC, what is the minimum slope for a 4-inch horizontal drainage pipe?

A.1/16 inch per foot

B.1/8 inch per foot

C.1/4 inch per foot

D.1/2 inch per foot

Explanation: Per FPC Table 704.1, horizontal drainage pipes 3 inches and larger require a minimum slope of 1/8 inch per foot. This slope ensures adequate velocity (approximately 2 feet per second) to transport solids effectively through the drainage system.

4What is the DFU value for a residential water closet (1.6 gpf) under the FPC?

A.2 DFU

B.3 DFU

C.4 DFU

D.6 DFU

Explanation: Per FPC Table 709.1, a residential water closet with 1.6 gallons per flush is rated at 3 DFU. This value is consistent with the IPC base code and is used for drainage and vent pipe sizing calculations throughout the Florida plumbing system.

5Under DBPR regulations, what license is required to perform plumbing work in Florida?

A.Only a local county license

B.A state-issued certified or registered plumber license from DBPR

C.A federal plumbing certification

D.No license required for residential plumbing

Explanation: Per Florida Statute 489, plumbing contractors must hold a state-issued certified or registered license through the Department of Business and Professional Regulation (DBPR). Certified licensees can work statewide; registered licensees work within specific jurisdictions.

6Per the DBPR Plumbing Candidate Information Booklet, how is the Plumbing General Trade Knowledge examination structured?

A.80 multiple-choice questions over 4 hours with no drawings

B.100 multiple-choice questions over 5 hours with no drawings

C.110 multiple-choice questions plus 5 isometric drawings (160 possible points) over two 4.5-hour sessions

D.120 multiple-choice questions over 6 hours covering only business and finance

Explanation: Per the DBPR Plumbing CIB, the trade exam totals 160 possible points: 110 equally weighted multiple-choice questions (1 point each) plus 5 isometric drawings (up to 10 points each). Morning session: 45 MCQ + 5 drawings (4.5 hours). Afternoon session: 65 MCQ (4.5 hours). Passing requires 112 of 160 points (70%).

7Under the FPC, what type of backflow preventer is required for a high-hazard cross-connection?

A.Atmospheric vacuum breaker (AVB)

B.Pressure vacuum breaker (PVB)

C.Double check valve assembly (DCVA)

D.Reduced pressure zone (RPZ) assembly

Explanation: Per FPC Section 608.16, reduced pressure zone (RPZ) backflow preventers are required for high-hazard cross-connections. Florida's high water table and warm climate increase contamination risks, making proper backflow prevention critical for public health protection.

8Per the FPC, what is the minimum trap seal depth for a standard plumbing fixture?

A.1 inch

B.2 inches

C.3 inches

D.4 inches

Explanation: Per FPC Section 1002.1, the minimum trap seal depth is 2 inches and the maximum is 4 inches. In Florida's warm climate, trap seals may evaporate faster, making trap seal primers especially important for infrequently used fixtures.

9Under the FPC, what is the maximum static water pressure allowed in a building?

A.60 psi

B.80 psi

C.100 psi

D.125 psi

Explanation: Per FPC Section 604.8, water pressure shall not exceed 80 psi static. Where supply pressure exceeds 80 psi, a pressure-reducing valve must be installed. Florida's municipal water systems can have variable pressures requiring careful regulation.

10On the Florida plumber exam isometric drawings, how must vent piping be treated?

A.Vents may be omitted if drainage piping is shown

B.All vents must be properly indicated on the isometric (graders award points for correct vent depiction)

C.Only the main stack vent is shown; branch vents are never drawn

D.Vents are drawn only if the floor plan labels them in red

Explanation: Per the DBPR Plumbing CIB isometric grading criteria, "Vents" is a scored criterion (16 points before conversion). All vents must be properly indicated on each isometric drawing. Omitting required vents costs points even if drainage piping is otherwise correct.

About the FL Plumber Exam

Florida journeyman plumber licensing is a local city/county pathway with jurisdiction-specific eligibility, test codes, formats, and reference editions. Prov administers participating local examinations. This resource prepares general plumbing trade skills and does not represent the Florida DBPR certified plumbing contractor examination.

Exam sponsor: Local Florida city/county licensing authority and its approved testing provider. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Question count not published by the exam provider

Time Limit

Varies by local jurisdiction

Passing Score

Set by the local licensing jurisdiction; a single statewide journeyman cutoff is not published.

Exam / Certification Fees

Varies by local jurisdiction; Prov’s June 24, 2026 general bulletin lists $90 per local licensing test, subject to variation.

Exam sponsor website

Reported exam pass rate: Not published. No single statewide first-time journeyman pass rate is published in the cited local licensing bulletins. Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Official sources

Prov — Florida local licensing candidate bulletin · Source checked 2026-10-10Explains local city/county authority, exam selection, authorized references, fees, and jurisdiction-specific retesting.
Prov — Escambia County exam descriptions · Source checked 2026-10-10Illustrative local journeyman exam only: 80 questions, 3 hours, 2023 Florida Building Code — Plumbing; not a statewide format.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.