Tex. Water Code § 60.078
A violation of this subchapter or of an ordinance, rule, or regulation adopted by a district under this subchapter is a misdemeanor, and the commission may provide for the punishment of the misdemeanor by a fine of not more than $500 for each offense or violation.
Acts 1971, 62nd Leg., p. 110, ch. 58, Sec. 1, eff. Aug. 30, 1971.
Acts 2005, 79th Leg., Ch. 758 (H.B. 2966), Sec. 1, eff. September 1, 2005.