Tex. Spec. Dist. Code § 7502.004
(a) The authority is composed of the territory described by Section 4(a), Chapter 522, Acts of the 71st Legislature, Regular Session, 1989, as that territory may have been modified under:
(b) The legislature finds that the boundaries of the authority form a closure. If any mistake exists in the description of the authority's boundaries, the mistake does not affect:
Added by Acts 2005, 79th Leg., Ch. 729 (H.B. 2019), Sec. 1.05, eff. April 1, 2007.