Tex. Water Code § 65.513
In addition to other rights and remedies provided by the law of this state, if a district defaults in the payment of principal of, interest on, or redemption price on its bonds when due, or if the district fails to make payments into any fund created in the order or resolution authorizing the issuance of the bonds, or defaults in the observation or performance of any other covenants, conditions, or obligations stated in the resolution or order authorizing the issuance of its bonds, the owners of any of the bonds are entitled to a writ of mandamus issued by a court of competent jurisdiction compelling the district and its officials to observe and perform the covenants, the obligations, or conditions prescribed in the order or resolution authorizing the issuance of the district's bonds.
Tex. Water Code § 65.513