Washington Domestic Well (PL03A) Contractor License

The Domestic Well (PL03A) Contractor License allows you to do the following work:

• Installation, maintenance, and repair of equipment used to:
  • Treat, store or move drinking or irrigation water by use of a pump not exceeding 100 gallons per minute or 7.5 horsepower

How to Get the Domestic Well (PL03A) 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 of age
   • 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 anAffidavit of Experience to report the supervised work hours as a plumber trainee
3. Meet the required experience or education:
   • Domestic Well (PL03A): 2,000 hours under the supervision of a certified plumber, except a Pump and Irrigation Plumber (PL30)
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©:
   • Domestic Well (PL03A) plumbers:
     • 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 Domestic Well (PL03A) Contractor License Exam Prep Course

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Washington Domestic Well (PL03A) Contractor License Exam

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

Washington Domestic Well (PL03A) 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
  • Drinking or Irrigation Water
  • Pump
• PSI© Domestic Well (PL03A) 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 Domestic Well (PL03A) Contractor Book Set

This set of books includes all required references for the Domestic Well (PL03A) exam. Orders placed before 2 PM are shipped the same day via UPS and a tracking number is emailed before 3 PM.

Washington Domestic Well (PL03A) Contractor Exam Books

Books Allowed in Testing

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