Hamilton County, Tennessee septic permits and requirements

Permitting authority

Hamilton County Development Services — Groundwater Department

Hamilton County Groundwater Department: 1250 Market Street, Suite 3046, Chattanooga, TN 37402; 423-209-7876. The county directs septic applications through its online OpenGov process.

Tennessee contract-county framework

Tennessee identifies certain counties as contract counties that administer subsurface sewage disposal functions locally. SepticScope therefore uses the local county or health-department process for this guide rather than copying the ordinary TDEC field-office workflow used in non-contract counties.

Local online application is required

Hamilton County states that septic applications must be completed online through its OpenGov system. The Groundwater Department handles new septic installations, repairs, lot reviews, modifications affecting existing systems, and questions involving structures or improvements near an existing system.

County distinguishes new, modification, repair, and existing-system reviews

Hamilton County’s published guidance directs applicants to different permit types depending on the work: a new conventional or alternative system, modification to add bedrooms or field lines, repair of an existing system, lot review for subdivision work, or an existing-system review for certain additions such as pools or non-plumbed accessory structures.

Local installer licensing applies

Hamilton County states that septic installers must hold a county septic-installer license. A person who already holds a Tennessee installer permit still files the county application and pays the applicable county fee, while an installer without the state permit must meet the county testing requirement. The county permit is issued for one year.

Final inspection and records are handled locally

Hamilton County provides a local process for existing septic permits and Certificates of Completion and identifies the Groundwater Department as the contact for septic records. Its guidance also recognizes Tennessee’s third-party permit-package and final-inspection provisions for contract counties.

Official sources

SepticScope summarizes public-agency information for planning purposes. The permitting agency's current instructions control if they differ from this guide.