A new septic system or a full replacement is one of the bigger jobs a rural homeowner will ever hire out. In Tennessee, systems are permitted and inspected under Tennessee Department of Environment and Conservation (TDEC) rules, and the work starts with a site and soil evaluation before anyone digs.
The companies below offer installation work in one or more of the counties this directory covers. Call them directly to talk through your site, permits, and pricing.
Companies Offering Septic Installation
[LISTINGS: Directory listings appear here, filterable by county. Each listing shows business name, phone, website, services offered, counties served, and TDEC permit number where provided.]
How an Install Usually Goes
- Site and soil evaluation. Your lot’s soil decides what kind of system it can support and where it can go.
- Permit. The system design is submitted and permitted under TDEC rules before installation.
- Installation. Tank, lines, and drain field go in, sized for the home.
- Inspection. The work is inspected before it is covered up.
What Does a New System Cost?
New installations and full replacements in Tennessee commonly run about $8,000 to $22,000, and difficult sites can go higher. Soil type, system size, and site access drive the number. That is a typical range, not a quote. Get more than one written estimate for a job this size. See also our cost guide.
Browse Installers by County
- Anderson County
- Campbell County
- Union County
- Northern Knox County
- Scott County (extended coverage)
- Roane County (extended coverage)
Before You Hire
Installers work under TDEC permits. Ask for the permit number, confirm who handles the permit paperwork, and get the full price and scope in writing. A listing here is information, not an endorsement.