Washington Revised Code Title 57. Water-Sewer Districts § 57.36.020. Initiation of merger--Procedure

(1) Whenever the boards of commissioners of districts determine by resolution that the merger of such districts shall be conducive to the public health, welfare, and convenience and to be of special benefit to the lands of such districts.

(2) Whenever ten percent of the voters residing within the merging district or districts petition the board of commissioners of the merging district or districts for a merger, and the board of commissioners of the merger district determines by resolution that the merger of the districts shall be conducive to the public health, welfare, and convenience of the districts.