Mont. Code § 81-23-406
The board may begin any proceeding at law or in equity as may appear necessary to enforce compliance with this chapter or to enforce compliance with an order or rule of the board or department adopted under this chapter or to obtain a judicial interpretation of any of them. In addition to any other remedy, the board may apply to the district court of the district where the action arises for relief by injunction, mandamus, or any other appropriate remedy in equity without being compelled to allege or prove that an adequate remedy at law does not otherwise exist. The board may not be required to post bond in an action to which it is a party whether upon appeal or otherwise. All legal actions may be brought by or against the board or department in the name of the department, and it is not necessary in an action to which the department is a party that the action be brought by or against this state on relation of the department. The board may sue by its own attorney, and it may also call upon a county attorney to represent it in the district court of the county attorney's county or the attorney general to represent it on appeal to the supreme court, or it may associate its own attorney with either in court.
§ 81-23-406, MCA