Tex. Natural Resources Code § 111.263

(a) Any person who violates a provision of Subchapter C, D, F, or G of this chapter or Section 111.004, 111.025, 111.131 through 111.133, 111.136, 111.137, or 111.140 of this code, a rule promulgated under these subchapters or sections, or an order passed by the commission under these subchapters or sections or one of these rules, on violation, is subject to a penalty of not less than $100 nor more than $1,000 for each offense recoverable in the name of the state in a district court in Travis County. Each day a violation continues constitutes a separate offense.

(b) One-half of the penalty may be recovered by and for the use of any person against whom there is an unlawful discrimination as defined in Subchapter D of this chapter, and this suit shall be brought in the name of and for the use of the party or parties aggrieved.