Tex. Water Code § 49.104
(a) Notwithstanding the provisions and requirements of the Election Code and general laws, any two or more districts situated in the same county and in which substantially all of the land is being or has been developed as part of a single community development plan and which are served by common water supply and waste disposal systems may by mutual agreement designate a common election office and common early and regular polling places within one or more of the districts, but outside the boundaries of one or more of the districts, for the conduct of director election proceedings and early and regular balloting in director elections. This alternative election procedure may only be used if the common election office and polling places so designated:
Added by Acts 1995, 74th Leg., ch. 715, Sec. 2, eff. Sept. 1, 1995.