Oregon Revised Statutes Public Health and Safety § 447.026

(1) All water pipe used to carry potable water sold in this state shall be clearly marked the entire length of pipe, at intervals of length set by the Director of the Department of Consumer and Business Services with the approval of the State Plumbing Board, with:

(2) A label, shield or coding system may be used to identify the manufacturer, origin and manufacturing standard under which the pipe was made if the manufacturer has on file with the Department of Consumer and Business Services a notice describing the identification system used.