If any person or retail public utility fails to comply with any lawful order of the utility commission or the commission or with any subpoena or subpoena duces tecum or if any witness refuses to testify about any matter on which he may be lawfully interrogated, the utility commission or the commission may apply to any court of competent jurisdiction to compel obedience by proceedings for contempt.
Official text of the Texas Water Code as published by the Texas Legislative Council.