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Washington Pump and Irrigation (PL03) Contractor License

The Pump and Irrigation (PL03) Contractor License allows you to do the following work:

  • Install, maintain, and repair equipment used for making water suitable for drinking, irrigation purposes or other domestic purposes:
    • Acquire water
    • Treat water
    • Store water
    • Move water
    • Irrigation or to a domestic water pumping system consisting of:
      • The pressurization, treatment, and filtration components of a domestic water system consisting of:
        • One or more pumps
        • Pressure
        • Storage
        • Other tanks
        • Filtration and treatment equipment

How to Get the Pump and Irrigation (PL03) Contractor’s License in Washington?

  1. Have experience as a Plumber Trainee. If you don't have experience as a Plumber Trainee, meet the following requirements and apply for a Plumbing Trainee certificate:
    • Be at least 16 years old
    • Work under the supervision of a journey level or certified plumber
    • Take 8 hours of plumbing code and 4 hours of electrical classes in two years
  2. Fill out and complete an Affidavit of Experience to report the supervised work hours as a plumber trainee
  3. Meet the required experience or education:
    • Pump and Irrigation (PL03): 4,000 hours working under the supervision of a certified plumber, except a Pump and Irrigation (PL30) or a Domestic Well (PL03A) plumber
  4. Fill out and notarize a Combination Contractor Application
  5. Complete and obtain a Surety Bond or Assigned Savings Account
  6. Get a Certificate of Liability Insurance
  7. Choose a designated plumber to hold the valid plumber certificate. The designated plumber can be another person or the applicant, depending on whether they are applying as a business or as a sole proprietor
  8. Meet the following educational requirements and apply for the plumber examination with PSI©:
    • Pump and Irrigation (PL03):
      • 24 hours of combination classes that cover plumbing and electrical subjects, or
      • 12 hours of plumbing and 12 hours of electrical education
  9. Refer to the PSI© Plumbing Examinations Candidate Information Bulletin, for more information on the test (locations, subjects, books to prepare for the exam)
  10. Submit all the completed documents to:
    Washington State Department of Labor & Industries
    Plumber Certification
    PO Box 44470
    Olympia WA 98504-4470

Washington Pump and Irrigation (PL03) Contractor License Exam Prep Course

Washington Pump and Irrigation (PL03) Contractor License Exam

Below is all the information related to the trade exam, including the official reference list.

Washington Pump and Irrigation (PL03) Contractor Trade Exam

  • Testing Method: Computer-based testing
  • Testing Company: PSI©
  • Number of Questions: 45
  • Types of Questions: Multiple choice
  • Time Allowed: 90 Minutes
  • Minimum Passing Score: 70%
  • Subjects Involved:
    • Gas and Vacuum Systems
    • Medical Gas
    • Pump Specialty
    • Acquire Water
    • Treat Water
    • Store Water
    • Move Water
    • Water Pumping System
  • PSI© Pump and Irrigation (PL03) Official Content Outline

Candidates must apply for eligibility with the Department before being allowed to take the examination. Please note that this is an open-book examination.

Washington Pump and Irrigation (PL03) Contractor Book Set

This set of books includes all required references for the Pump and Irrigation (PL03) and exam. Orders placed before 2 PM are shipped the same day via UPS and a tracking number is emailed before 3 PM.

  • WASHINGTON PUMP AND IRRIGATION (PL03) - BOOK SET WITHOUT TABS INCLUDES ALL BOOKS FOR TRADE AND BUSINESS EXAMS

    Sales price: $271.31

  • WASHINGTON PUMP AND IRRIGATION (PL03) - BOOK SET WITH TABS INCLUDES ALL BOOKS FOR TRADE AND BUSINESS EXAMS

    Sales price: $291.31

Washington Pump and Irrigation (PL03) Contractor Exam Books

Books Allowed in Testing

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