(1) If a district acquires either water facilities or sewer facilities, or both from a city, and the district and the city within which the facilities are located enter into an agreement stating that the district will seek annexation of territory within that city, the district commissioners may initiate a process for the annexation of such territory.

(2) The annexation process shall commence upon the adoption of a resolution by the commissioners calling for the question of annexation to be submitted to the voters of the territory proposed for annexation and setting forth the boundaries thereof. The resolution must be filed with the county legislative authority of each county in which the territory proposed for annexation is located.

(3) Upon receipt of the resolution, the county legislative authority shall cause a hearing to be held as provided in RCW 57.24.240.