Tex. Water Code § 60.113
A holder of obligations issued under this subchapter or coupons originally attached to the obligations may by any legal proceeding enforce and compel performance of all duties required by this subchapter to be performed by the commission. The duties which can be the basis of an action under this section shall include:
Acts 1971, 62nd Leg., p. 110, ch. 58, Sec. 1, eff. Aug. 30, 1971.