Tennessee Code Title 7. Consolidated Governments and Local Governmental Functions and Entities § 7-82-313

(a) A utility district that dispatches fire trucks and offers other such fire protection services may charge for the services rendered to a nonsubscriber when a fire or other dangerous situation is reported by any citizen or emergency communications district. To impose such charges, the utility district's board of commissioners shall establish and publish a schedule of the costs for such services.

(b) This section shall only apply in counties having a population of not less than eighty-five thousand eight hundred (85,800) nor more than eighty-six thousand one hundred (86,100), according to the 1990 federal census or any subsequent federal census.