Tex. Spec. Dist. Code § 1099.151
(a) The district may annex territory that is not located in:
(b) Territory may be annexed in one or more tracts. Each tract must be contiguous to:
Added by Acts 2011, 82nd Leg., R.S., Ch. 70 (S.B. 1147), Sec. 1.01, eff. April 1, 2013.