Section 296-400A-430. If I am a certified backflow assembly maintenance and repair, journey level, or specialty plumber do I need to be a registered contractor under chapter 18.27 RCW?
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Anyone who advertises, offers to do work, submits a bid, or performs any work under chapter 18.106 RCW and these rules must be a registered contractor as required under chapter 18.27 RCW, or an employee of such a registered contractor, with wages as their sole compensation.