Oregon Revised Statutes Public Health and Safety § 448.170

(1) The Oregon Health Authority may enter into an agreement with a local public health authority, as defined in ORS 431.003, under which the local public health authority performs the duties of the Oregon Health Authority under the Oregon Drinking Water Quality Act. The duration of the agreement, the duties to be performed and the remuneration to be paid by the Oregon Health Authority are subject to agreement by the Oregon Health Authority and the local public health authority.

(2) In any action, suit or proceeding arising out of a local public health authority's administration of functions pursuant to ORS 446.310, 448.030, 448.115 to 448.285, 454.235, 454.255, 455.170 and 757.005 and involving the validity of a rule adopted by the Oregon Health Authority, the Oregon Health Authority shall be made a party to the action, suit or proceeding.