Plumbing Rule Changes

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Plumber Certification Law - RCW 18.106
Plumber Certification Rules – WAC 296-400A

2015 Plumber Certification Rule Development

The Plumber Certification program is proposing amendments to sections of Chapter 296-400A WAC. The program reviews the rules on a regular basis to ensure consistency with national consensus standards, industry practice, and to clarify the existing rules.

The following are the adopted rule changes: Chapter 296-400A WAC Adopted Language.

June 16, 2015 Preproposal (CR-101)
October 6, 2015 Proposed Rule Making (CR102)
November 17, 2015

Public Hearing at Tumwater L&I Office at 1 p.m.
(Comments due by 5 p.m.)
Public Hearing Information Packet

April 5, 2016 Adopted (Rule-Making Order CR-103)


The effective date of the rules is May 16, 2016.

For comments email

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