Wash. Rev. Code § 57.20.135
Upon obtaining the approval of the county treasurer, the board of commissioners of a district with more than twenty-five hundred water customers or sewer customers may designate by resolution some other person having experience in financial or fiscal matters as the treasurer of the district. Such a treasurer shall possess all of the powers, responsibilities, and duties of, and shall be subject to the same restrictions as provided by law for, the county treasurer with regard to a district, and the county auditor with regard to district financial matters. Such treasurer shall be bonded for not less than twenty-five thousand dollars. Approval by the county treasurer authorizing such a district to designate its treasurer shall not be arbitrarily or capriciously withheld.
RCW 57.20.135
Part headings not law-Effective date-1996 c 230: See notes following RCW 57.02.001.
Ratification-1988 c 162 ss 10 and 11: "Any action taken by a sewer district treasurer or water district treasurer prior to March 21, 1988, and consistent with sections 10 and 11 of this act is ratified and confirmed." [ 1988 c 162 s 12.]