(1) A district may contract indebtedness or borrow money for any corporate purpose on its credit or on the revenues of its public utilities, and to evidence such indebtedness may issue general obligation bonds or revenue obligations; may issue and sell local utility district bonds of districts created by the commission, and may purchase with surplus funds such local utility district bonds, and may create a guaranty fund to insure prompt payment of all local utility district bonds. The general obligation bonds shall be issued and sold in accordance with chapter
39.46 RCW. A district is authorized to establish lines of credit or make other prearranged agreements, or both, to borrow money with any financial institution.