RCW 35.92.090

The total general indebtedness incurred under this chapter, added to all other indebtedness of a city or town at any time outstanding, shall not exceed the amounts of indebtedness authorized by chapter 39.36 RCW, as now or hereafter amended, to be incurred without and with the assent of the voters: PROVIDED, That a city or town may become indebted to a larger amount, but not exceeding the amount authorized therefor by chapter 39.36 RCW, as now or hereafter amended, for supplying it with water, artificial light, and sewers when works for supplying such water, light, and sewers are owned and controlled by the city or town.