Tex. Spec. Dist. Code § 8860.151
(a) The board by rule may impose a reasonable fee on each well for which a permit is issued by the district and that is not exempt from regulation by the district. The fee may be based on:
(b) In addition to a fee imposed under Subsection (a), the district may impose a reasonable fee or surcharge for an export fee using one of the following methods:
Added by Acts 2011, 82nd Leg., R.S., Ch. 1091 (S.B. 1290), Sec. 1, eff. September 1, 2011.