ORS 550.180: District electors and landowners authorized to contest validity of board proceeding, action, order, contract, decision or enactment.

(1)(a) Any elector or owner of land within the district may bring any proceeding that the board of directors is authorized to bring under ORS 33.710.

      (b) The proceeding shall be governed by ORS 33.720, except as otherwise provided in this section.

      (c) For purposes of this section, the district shall be considered a municipal corporation as defined in ORS 33.710.

      (2) The proceeding shall be brought in Multnomah County Circuit Court. The board of directors shall be named as defendant in the proceeding.

      (3) Service of summons shall be made on the members of the board of directors personally if within Multnomah County. For directors not within the county, service may be made by publication of notice for a like time, and in like manner, as provided by ORS 33.720. Jurisdiction shall be complete within 10 days after the date of completing publication of notice.