*** CHANGE IN 2026 *** (SEE 6039-S.SL) ***
(1) An authorized representative of the department may issue a notice of infraction as specified in RCW 18.106.020 if:
(a) A person who is doing plumbing work or who is offering to do plumbing work fails to produce evidence of:
(i) Having a certificate or permit issued by the department in accordance with this chapter, or being supervised by a person who has such a certificate or permit; and
(ii) Until January 1, 2021, being registered as a contractor as required under chapter 18.27 RCW, or being employed by a person who is registered as a contractor as required under chapter 18.27 RCW;
(b) Until January 1, 2021, a person who employs anyone, or offers or advertises to employ anyone, to do plumbing work fails to produce evidence of being registered as a contractor as required under chapter 18.27 RCW;
(c) After January 1, 2021, a person who employs anyone, or offers or advertises to employ anyone, to do plumbing work fails to produce evidence of being licensed as a plumbing contractor as required under this chapter; or
(d) A contractor violates RCW 18.106.320.
(2) A notice of infraction issued under this section shall be personally served on the person or contractor named in the notice by an authorized representative of the department or sent using a method by which the mailing can be tracked or the delivery can be confirmed to the last known address provided to the department of the person named in the notice.