Exam Domains
1 International Plumbing Code (IPC) or Uniform Plumbing Code (UPC)
Weight not published
2 Plumbing System Design and Installation
Weight not published
3 Drain, Waste, and Vent (DWV) Systems
Weight not published
4 Water Supply and Distribution
Weight not published
5 Fixtures and Faucets
Weight not published
6 Gas Piping Systems
Weight not published
7 Sizing and Hydraulics
Weight not published
8 Backflow Prevention
Weight not published
9 Safety and OSHA Requirements
Weight not published
Exam Details
Question TypesMultiple Choice
FormatComputer-based or paper test at testing center; most states allow the relevant plumbing code book (IPC or UPC) as a reference during the exam.
Online ProctoringNot available
ID RequirementsGovernment-issued photo ID required. Name on ID must match registration exactly.
RenewalRequired -- License renewal every 2–3 years; continuing education required (8–16 hours depending on state); plumbing code editions update every 3 years and may require code-update training.
PrerequisitesSeven years of plumbing experience in NYC; two years as a licensed Journeyman (recommended)
Retake PolicyTypically a 30-day waiting period between failed attempts. Most states allow 3–5 attempts per year. Some states require reapplication after multiple consecutive failures.