Plumber Trainee

Becoming a plumber trainee

To learn the plumbing trade in Washington State, you must apply for a plumber trainee certificate and work under the direct supervision of a certified plumber. You will need to maintain your trainee certificate until you get the required hours and years of experience to take a plumber examination.

Trainees must:

  • Be 16 years or older. For information about minors working on a construction site contact Employment Standards.
  • Apply to become a plumber trainee.
  • Work under the direct supervision of a journey level or specialty plumber.
  • Obtain the required hours and years of experience to become certified as a journey level or specialty plumber.
  • Maintain an electrical trainee card if you work in the pump and irrigation or domestic pump trade.
  • Take 8 hours of approved continuing education instruction per year to renew their certificate.

For information about your continuing education requirements, please call the Plumber Certification Program at 306-902-5207.

Experience and training for trainees

Plumber trainees working for registered contractors must submit separate affidavits of experience to report their hours worked for each employer and/or supervising plumber during the previous year. See RCW 18.106.070 (2) and WAC 296-400A-120 (4).

For your protection, keep a training log to help verify the accuracy of your affidavits of experience. For an example of how trainees can track hours, refer to our sample training log. A trainee's log is strictly for their record keeping. It is not an acceptable form of documentation for contractors. It is the plumber trainee's responsibility to submit each of their affidavits to the department at the time of renewal.

 

Applying for a plumber trainee certificate

Before applying online, make sure you meet all of the requirements.
  • The fee is $45.20.
  • You must not have any outstanding, unpaid infractions with L&I.
To apply online, you will need the following:
  • Your Social Security number.
  • Payment, we accept Visa, MasterCard, Discover and American Express credit cards

    Visa Card

    Mastercard

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    American Express

    Visa

    MasterCard

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    American Express

  • Note: We also accept E-Check, a one-time withdrawal from your checking account.
We will mail your certificate within 2-4 weeks.
Apply online now

 

There are two parts to renewing your plumber trainee certification

  1. Pay your renewal fee of $45.20.
  2. Complete your required continuing education.
    • 8 hours of approved continuing education is required each year to renew your plumber trainee certificate. Within a two-year period you must have a minimum of 8 hours of plumbing code training and 4 hours of industry-related electrical (IRE) training. The other 4 hours may be from any category: plumbing code, IRE, ir industry-related plumbing (IRP).

If you have any unpaid plumbing infractions or your certificate is suspended, you cannot renew online and you must contact the Plumbing Program at 306-902-5207.

Within 30 days of renewal.

Mail your affidavits of experience to:

Department of Labor & Industries, Plumber Certification Program,
PO Box 44470,
Olympia, WA 98504-4470.

 

No copies of affidavits are accepted.

To renew online, you need:
  • An active or expired certificate (not suspended or canceled).
  • Your 12-digit certification number.
  • Your social security number.
  • Payment, we accept Visa, MasterCard, Discover and American Express credit cards

    Visa Card

    Mastercard

    Discover

    American Express

    Visa

    MasterCard

    Discover

    American Express

  • Note: We also accept E-Check, a one-time withdrawal from your checking account.
Renew online now

 

You can also get or renew your plumber trainee certificate

 


More information

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