Oregon Revised Statutes Public Health and Safety § 451.435

(1) All district formation and change of organization proceedings shall be initiated, conducted and completed as provided by ORS 198.705 to 198.955. Except for an order allowing an existing district established to provide sewage works to also provide drainage works, no county or portion thereof shall be included within a district which is to provide services in more than one county without the consent of the governing body of the affected county.

(2) In the case of sewage works, upon certification to the county court by the Environmental Quality Commission or the local health officer that an emergency exists the county court shall initiate the formation of a district in the manner specified in ORS 198.835, or annexation to an existing district in the manner specified in ORS 198.850 (3), whichever is most appropriate.

(3) A petition or order initiating the formation or change or organization of a district shall, in addition to the requirement specified by ORS 198.705 to 198.955, state which of the service facilities specified by ORS 451.010 the district shall be authorized to construct, maintain and operate.

(4) A final order in a formation or change of organization proceeding of a district shall, in addition to the requirements specified by ORS 198.705 to 198.955, state which of the service facilities specified by ORS 451.010 the district shall be authorized to construct, maintain and operate.