Tex. Water Code § 15.953

(a) The board may use funds in the account to reimburse a political subdivision or a nonprofit organization for eligible expenses incurred in a self-help project that results in the provision of adequate water or wastewater services to a colonia. Eligible expenses under this subsection include:

(1) construction expenses;

(2) facility planning expenses;

(3) platting expenses;

(4) surveying expenses;

(5) engineering expenses;

(6) equipment expenses; and

(7) other expenses necessary to provide water or wastewater services to the colonia, as determined appropriate by the board.

(b) The board may award a grant under the program directly to a political subdivision or nonprofit organization to reimburse the subdivision or organization for expenses incurred in a self-help project described by Subsection (a). If the board determines that a retail public utility described by Section 15.955(8) has made a commitment to the self-help project sufficient to ensure that retail water or wastewater service will be extended to the colonia, the board may make an advance of grant funds. An advance under this subsection is subject to the terms determined by the board and may not exceed 10 percent of the total amount of the grant.