Official sources checked August 28, 2026
Johnson County, Tennessee septic permits and requirements
Permitting authority
Tennessee Department of Environment and Conservation (TDEC), Division of Water Resources
TDEC Johnson City Environmental Field Office — 423-854-5400; 2305 Silverdale Drive, Johnson City, TN 37601-2162. TDEC lists Johnson County in this office’s service area.
When a permit is required
TDEC states that a Septic System Construction Permit is required to install a subsurface sewage disposal system or repair an existing faulty system. Obtain the applicable permit before regulated septic work begins.
Application and site information
State application materials can require ownership and site information, expected occupancy or bedroom count, water supply information, a site sketch, and—depending on site conditions—soil-scientist or engineered design documentation.
Installers and inspections
Tennessee requires septic installers and septage pumpers to hold current state permits. Verify credentials and complete the required inspection or certificate-of-completion process before covering or placing a system in service.
Official sources
- TDEC Johnson City Environmental Field Office
- TDEC Septic System Construction Permit
- TDEC online septic-services application
- TDEC licensed installers and pumpers
- TDEC third-party permits and final inspections
SepticScope summarizes public-agency information for planning purposes. The permitting agency's current instructions control if they differ from this guide.