Laws and rules pertaining to plumbing can be found in the following:
- Washington Administrative Code (WAC) Chapter 296-400A.
- Revised Code of Washington (RCW) Chapter 18.106.
The laws and rules are maintained and updated by the State Office of the Code Reviser.
Rule Development
2024 Expedited Rulemaking
On July 23, 2024, the agency filed an “expedited” rule that amends the application requirements for plumber trainee certificates. This is taking place now to comply with a new state law.
The proposed rule affects Washington Administrative Code 296-400A-120, What do I need to know about plumber trainee certificates? If adopted, the new rule would take effect on September 24, 2024.
Expedited rule process
This rule is being proposed under an expedited rulemaking process. The expedited process allows for the adoption of rules that incorporate statutory language and as such eliminates requirements to hold a public hearing, prepare a small business economic impact statement, or provide responses to the criteria for a significant legislative rule.
If you object to this expedited rulemaking process, you must express your objections in writing and they must be sent to:
By Mail: Meagan Edwards, Management Analyst
Dept. of Labor & Industries
Field Services & Public Safety
PO Box 44400
Olympia, WA 98504-4400
By Email: Meagan.Edwards@Lni.wa.gov
By Fax: 360-704-1980
Objection to this expedited rulemaking must be received by September 23, 2024.
What the expedited proposed rule does
The expedited proposed rule adds language that allows plumber trainee applicants the option of providing an Individual Taxpayer Identification Number (ITIN) in lieu of a Social Security Number (SSN) when applying for a plumber trainee certificate.
The rule change is required for uniformity with Substitute House Bill 1889 (Chapter 50, Laws of 2024) and Engrossed Senate Bill 5997 (ESB 5997) (Chapter 97, Laws of 2024) that passed the legislature this year. The statutory changes took effect July 1, 2024.
Rulemaking Documents