Tex. Hum. Res. Code § 112.014
(a) A position on the council becomes vacant if:
Added by Acts 1983, 68th Leg., p. 5272, ch. 970, Sec. 1, eff. Aug. 29, 1983.
Amended by Acts 1999, 76th Leg., ch. 79, Sec. 2, eff. Sept. 1, 1999.
Acts 2015, 84th Leg., R.S., Ch. 1 (S.B. 219), Sec. 4.404, eff. April 2, 2015.