Tennessee Code Title 68. Health, Safety and Environmental Protection § 68-221-209

(2) Require the owner, tenant or occupant of each lot or parcel of land who is responsible for any connection to the sanitary sewer required under this section to properly maintain that portion of the connection that is located on the property of the owner, tenant or occupant; and in addition to any other method of enforcing such requirement, a city, town or utility district also providing water service to such property may, within or without its border, refuse water service to such owner, tenant or occupant until there has been compliance and may discontinue water service to an owner, tenant or occupant failing to comply within thirty (30) days after notice to comply;

(3) Require the owner, tenant or occupant of each lot or parcel of land who is obligated to pay the charges made for the services furnished by any sewage system or sewage disposal system, to make a reasonable deposit in advance to secure the payment of such charges; and

(4) Proceed to recover the amount of any delinquent charges owed by any such owner, tenant or occupant, with interest thereon at the maximum legal rate, in an action ex contractu.

(b)(1) If a water and wastewater treatment authority, created pursuant to part 6 of this chapter:

then such authority is responsible for maintaining the sanitary sewer and building service, including couplings and fittings thereto, to which the building lateral sewer of the residential or commercial customer is connected. In no event shall a residential or commercial customer be responsible for maintaining that portion of any lateral or connection that is located beyond the property line of such customer.

(2) As used in this subsection (b), unless the context otherwise requires:

(3) Such water and wastewater treatment authority is liable upon a showing of negligence for any damage incurred by such residential or commercial customers that is caused by damage to or failure of such sanitary sewer or building service, including couplings and fittings thereto.

(4) This subsection (b) does not apply in any county having a population of not less than eighty thousand (80,000) nor more than eighty-three thousand (83,000) nor in any county having a population of not less than sixty-seven thousand six hundred (67,600) nor more than sixty-seven thousand nine hundred (67,900), according to the 1990 federal census or any subsequent federal census.