30 Tex. Admin. Code § 321.258
If any registrant or facility regulated by this subchapter fails to comply with the terms of this subchapter, the executive director may take enforcement action as provided by the Texas Water Code and in accordance with Chapter 70 of this title (relating to Enforcement). The executive director may revoke any registration granted to a registrant or facility due to noncompliance with the requirements of this subchapter, after notice to the registrant and opportunity for hearing, and such registrant shall cease any discharge until such time as the facility is issued a wastewater discharge permit, an emergency order, or temporary order as provided by Chapter 35 of this title (relating to Emergency and Temporary Orders and Permits; Temporary Suspension or Amendment of Permit Conditions) for the discharge of wastewater into or adjacent to water in the state.
30 Tex. Admin. Code § 321.258