Tex. Transp. Code § 452.606
(a) The addition of territory approved under Section 452.602 or 452.603 does not take effect if, before the effective date of the addition under Subsection (b), the executive committee of the authority gives written notice to the governing body of the municipality or the commissioners court of the county that held the election that the addition would create a financial hardship on the authority because:
Acts 1995, 74th Leg., ch. 165, Sec. 1, eff. Sept. 1, 1995.