M2101.3 Protection of potable water. The potable water system shall be protected from backflow in accordance with the provisions listed in Section 603 of the state plumbing code.

[Statutory Authority: RCW 19.27.031 and 19.27.074. WSR 23-02-058, 23-12-104, and 23-20-024, § 51-51-2101, filed 1/3/23, 6/7/23, and 9/25/23, effective 3/15/24; WSR 16-03-025, § 51-51-2101, filed 1/11/16, effective 7/1/16.]