Tennessee Code Title 5. Counties § 5-19-103

(1) Some agency or officer of the county already in existence;

(2) A county sanitation department to be created;

(3) A board established as provided in § 5-19-104; or

(4) Contractual arrangements the county may make between itself and any municipality, any utility or other service district, any private organization or any combination of such entities engaged in garbage and rubbish collection services or garbage and rubbish disposal services, or both. In the event all such county services are to be rendered exclusively by such contractual arrangements, the contracts involved shall be negotiated by the county mayor, shall be subject to the approval of the county legislative body or other governing body and may be administered by the county mayor without the appointment of a superintendent, as provided for in § 5-19-105, being required.