Whenever used in this chapter, the following words shall have the following meanings:
(1) The words "district," "water district," and "sewer district" shall mean a "water-sewer district" as that term is used in Title 57 RCW.
(2) The word "city" shall mean a city or town of any class and shall also include any code city as defined in chapter 35A.01 RCW.
(3) The word "indebtedness" shall include general obligation, revenue, and special indebtedness and temporary, emergency, and interim loans.