Okla. Stat. tit. 27A § 1013
A Central Treatment Trust, as defined in Section 2 of this act, is hereby granted the authority, exercisable by a duly enacted resolution of its Board of Trustees, to elect that its waste water treatment facilities shall be deemed to constitute "treatment works" that are publicly owned within the meaning of 33 U.S.C., Sections 1292 and 1317(b). A CTT making such an election shall also be deemed to own a "publicly owned treatment works", or "POTW", within the meaning of 40 CFR, Section 403.3(o). Upon the adoption of a resolution exercising such election, the CTT shall promptly give notice of such official action and furnish a certified copy of the Board resolution to the United States Environmental Protection Agency, the Department and the Oklahoma Secretary of State.
Okla. Stat. tit. 27A, § 1013