(1) In the event a municipality or other entity operating sewage systems fails, neglects, or refuses when required by the department to adopt the system of charges and rates authorized by 75-5-511, the department may adopt a system of charges and rates as provided for in 75-5-511 (1) and collect, administer, and apply such revenues for the purposes of 75-5-512.
(2) In lieu of proceeding in the manner set forth in subsection (1) of this section, the department may institute proceedings at law or in equity to enforce compliance with or restrain violations of 75-5-511 through 75-5-513.