30 Tex. Admin. Code § 216.30
Pursuant to Texas Water Code, § 26.177(d), any person affected by any ruling, order, decision, ordinance, program, resolution, or other act of a city relating to water pollution control and abatement outside the corporate limits, within the extraterritorial jurisdiction of such city adopted pursuant to this subchapter or any other statutory authorization may appeal such action to the commission or district court. An appeal must be filed with the commission's chief clerk within 60 days of the enactment of the ruling, order, decision, ordinance, program, resolution, or act of the city. The issue on appeal is whether the action or program is invalid, arbitrary, unreasonable, inefficient, or ineffective in its attempt to control water quality, and the commission's order on the appeal will be based on whether the city's actions or programs meet these criteria. The commission or district court may overturn or modify the action of the city. If an appeal is taken from a commission ruling, the commission ruling shall be in effect for all purposes until final disposition is made by a court of competent jurisdiction so as not to delay any permit approvals.
30 Tex. Admin. Code § 216.30