Only a person who has qualified as a registered sanitarian or environmental specialist and who holds a valid current registration certificate for use in this state shall have the right and privilege of using the title Registered Professional Sanitarian or Registered Professional Environmental Specialist and to use the abbreviation R.P.S. or R.P.E.S. after the name of such person. Any person who violates the provisions of this section, upon conviction thereof, shall be guilty of a misdemeanor.
Okla. Stat. tit. 59, § 1150.12