Mont. Code Ann. § 50-53-201
License required -- validation
50-53-201 . License required -- validation. (1) A person may not operate a public swimming pool or public bathing place without annually obtaining a license from the department.
(2) A license is required for each separate public swimming pool or public bathing place. A public swimming pool is separate if:
(a) its water does not commingle with water from any other public swimming pool; or
(b) it is serviced by a separate water filtration system.
(3) A license issued by the department is not valid unless signed in accordance with 50-53-206 , if applicable, or in accordance with 50-53-207 , in the case of an appeal.