Tex. Water Code § 61.168

The franchise may be suspended from taking effect if, before the date when the franchise is granted, a petition signed by qualified voters of the district equal to 10 percent of the total vote cast in the last general election for state officers is presented to the commissioners court protesting the enactment or granting of the franchise. Immediately after the petition is filed, the commissioners court shall order an election on the proposed franchise. The election shall be governed by the provisions of Sections 61.164 and 61.165.