Tennessee Code Title 68. Health, Safety and Environmental Protection § 68-221-108

(a) The department may cause the enforcement of any standards, policies, general or special orders, rules or regulations issued by it to control public water supplies and public sewerage systems.

(b) Such suit or suits as may be necessary to effectually carry out this part may be instituted, brought and prosecuted, in any court of competent jurisdiction.

(c) The district attorney general in whose jurisdiction a violation of this part occurs or the attorney general and reporter, either or both as indicated, shall institute and prosecute such suits when necessity therefor has been shown by those herein clothed with power of investigation.