Okla. Stat. tit. 59 § 1020
Nothing in The Plumbing License Law of 1955 shall prohibit cities and towns from having full authority to provide full supervision and inspection of plumbing by the enactment of codes and rules in such form as they may determine and prescribe; provided, that no such ordinances, bylaw or rule shall be inconsistent with the Oklahoma Uniform Building Code Commission Act or any rule adopted or prescribed by the Oklahoma Uniform Building Code Commission, The Plumbing License Law of 1955, or any rule adopted or prescribed by the Construction Industries Board through authority of The Plumbing License Law of 1955 and the provisions of the Construction Industries Board Act. Each state-licensed master plumber or plumbing contractor shall be required to register with the plumbing inspector of every city and town in whose jurisdiction the plumber operates, and each such city or town is hereby authorized to register such master plumber or plumbing contractor to revoke the same, to charge fees for such registration, for permits and for inspections of plumbing and fixtures. Provided, further, that no master plumber or plumbing contractor shall be permitted to do business or work in any city or town wherein the local registration of the plumber has been revoked.
Okla. Stat. tit. 59, § 1020