RCW 36.22.090: Warrants of political subdivisions.

All warrants for the payment of claims against diking, ditch, drainage and irrigation districts and school districts of the second class, who do not issue their own warrants, as well as political subdivisions within the county for which no other provision is made by law, shall be drawn and issued by the county auditor of the county wherein such subdivision is located, upon proper approval by the governing body thereof.