ORS 448.455: Certification required for operators.

(1) Any potable water treatment plant or water distribution system whether publicly or privately owned, used or intended for use by the public or private persons must be supervised by an operator certified pursuant to ORS 448.450. The operator’s certification must correspond to the classification of the water treatment plant or distribution system supervised by the operator.

      (2) A person may not:

      (a) Allow any potable water treatment plant or water distribution system to be operated unless the operator is certified or the potable water treatment plant or water distribution system is supervised by an operator certified under the provisions of ORS 448.450 to 448.465, 448.992 and 448.994.

      (b) Perform the duties of an operator unless the person is certified under the provisions of ORS 448.450 to 448.465, 448.992 and 448.994.