Okla. Stat. tit. 63, § 63-1-223: Constitutional levy for health department

A levy of not to exceed two and one-half (2 1/2) mills on the

dollar of assessed valuation of a county may be levied annually in

accordance with the provisions of Section 9A, Article 10, Oklahoma

Constitution, for the purpose of providing funds to maintain or aid

in maintaining a county, district or cooperative department of

health, where such levy is approved by a majority of the qualified

ad valorem taxpaying voters of the county, voting on the question at

an election called for such purpose; and the amount of the levy so

approved may continue to be made annually until repealed by a

majority of the qualified ad valorem taxpaying voters of the county,

voting on the question at an election called for such purpose.