(1) The territory within the affected district is uninhabited;
(2) The district has failed regularly to elect district board members in accordance with the principal Act of the district;
(3) For a county service district, dissolution is required due to an absence of public need for continuation of the district, as provided in ORS 451.620; or
(4) For a county service district, the district is no longer necessary for the purpose for which it was formed. [1971 c.727 §53; 1987 c.504 §9; 2009 c.496 §1]