ORS 431.710: When Oregon Health Authority to initiate district formation or annexation.

(1) ORS 431.705 to 431.760 shall not apply if the affected territory could be subject to an annexation proceeding under ORS 222.840 to 222.915.

      (2) If the Oregon Health Authority, in accordance with ORS 431.705 to 431.760, finds that a danger to public health exists within the affected territory and that such danger could be removed or alleviated by the construction, maintenance and operation of service facilities, the authority shall initiate proceedings for the formation of or annexation to a district to serve the affected territory. If the affected territory is located within a district that has the authority to provide the service facilities, the authority shall order the district to provide service facilities in the affected territory.