Tex. Water Code § 35.012

(a) Following the issuance of a commission order under Section 35.008 designating a priority groundwater management area and recommending the creation of one or more districts, or the addition of land to an existing district, the landowners in the priority groundwater management area may:

(1) create one or more districts under Subchapter B, Chapter 36;

(2) have the area annexed to a district that adjoins the area; or

(3) create one or more districts through the legislative process.

(b) Except as provided by Section 35.013, within two years, but no sooner than 120 days, from the date on which the commission issues an order under Section 35.008 designating a priority groundwater management area, for those areas that are not within a district, the commission shall create one or more new districts under Section 36.0151.

(b-1) For purposes of this section, the commission may consider territory in two separately designated priority groundwater management areas to be in the same designated priority groundwater management area if:

(1) the two areas share a common boundary and one or more common aquifers; and

(2) the commission determines that a district composed of territory in the two areas will result in more effective or efficient groundwater management than other options available to the commission.

(c) Following the issuance of a commission order under Section 35.008, the Texas Agricultural Extension Service shall begin an educational program within such areas with the assistance and cooperation of the Texas Water Development Board, the commission, the Department of Agriculture, other state agencies, and existing districts to inform the residents of the status of the area's water resources and management options including possible formation of a district. The county commissioners court of each county in the priority groundwater management area shall form a steering committee to provide assistance to the Texas Agricultural Extension Service in accomplishing the goals of the education program within the area.