Oregon Revised Statutes Public Health and Safety § 450.837

(1) Water authorities and sanitary authorities are municipalities for the purposes of administering and enforcing the plumbing code as provided under ORS 455.150.

(2) However, notwithstanding ORS 455.150 (3), a building official appointed by a water authority or sanitary authority or an inspector acting under the authority and direction of such a building official shall administer and enforce only that portion of the plumbing code governing the installation and maintenance of connections between structures and the mains and sewers of the authority.

(3) Nothing in this section authorizes a building official or inspector of a water authority or sanitary authority to administer or enforce all or part of any specialty code except the plumbing code.

(4) A water authority or sanitary authority shall notify the Director of the Department of Consumer and Business Services not later than May 1 of each year as to whether the authority will or will not exercise the code enforcement power granted by this section.