ORS § 545.301
In carrying out and executing the powers conferred in this section and ORS 545.257, 545.303 and 545.305, an irrigation district may borrow money and issue bonds or other evidences of indebtedness. The district may contract with the United States or any agency thereof for the acquisition, construction, reconstruction, maintenance or operation of all or part of a domestic and municipal water system. The powers granted by this section shall not be exercised without the prior approval of a majority of the electors of the district at an election conducted as declared in ORS 545.305. However, no authority granted before March 5, 1945, to any irrigation district by a majority of the electors of the district at an election held pursuant to any other law shall be limited or otherwise affected by this section and ORS 545.257, 545.303 and 545.305.
ORS 545.301