Verify first, then compare scope

How to Vet a Septic Installer in Maury County

The lowest bid means nothing if it leaves out rock, electrical work, or restoration. Start with the state's installer list and your issued permit, then make every bidder price the same job.

How do you choose a septic installer in Tennessee?

Look the installer up on TDEC's active installers and pumpers list and make sure their permit covers your system type. Tennessee licenses conventional installers separately from LPP, mound, lagoon, and ATS or drip work, and every permit expires December 31. Then give each bidder the same issued permit, compare itemized bids, and don't let work be covered before inspection.

How do you verify a Tennessee septic installer license?

What to match: Permit holder name
Against: Contract, invoice, and the person running the job
Why: A similar business name doesn't prove the contracting party is active

What to match: Active status
Against: The year the work happens
Why: Permits lapse every December 31

What to match: Category
Against: The system type on your TDEC permit
Why: Tank experience doesn't cover every alternative system

What to match: Ownership
Against: The current owner of the business
Why: A permit becomes invalid when ownership changes

What to match	Against	Why
Permit holder name	Contract, invoice, and the person running the job	A similar business name doesn't prove the contracting party is active
Active status	The year the work happens	Permits lapse every December 31
Category	The system type on your TDEC permit	Tank experience doesn't cover every alternative system
Ownership	The current owner of the business	A permit becomes invalid when ownership changes

Verify with the state: TDEC active installers and pumpers · TDEC installer permit requirements

1
Open TDEC's current list
Use the state's Active Installers and Pumpers page. A business card, a truck decal, or an old proposal isn't proof of current status.
2
Search the legal name
Match the person or company on the list to the name on the contract and invoice. Ask about any difference in trade names.
3
Check the year
Installer permits expire December 31. If your job starts in January, check again.
4
Match the category to your permit
A conventional permit doesn't cover an LPP, mound, lagoon, or ATS/drip system. Each alternative type is a separate endorsement.
5
Ask who's actually on site
Find out whether the permit holder will run the job and who does the excavation, electrical work, and startup.
6
Save the proof
Keep a dated screenshot of the listing with your contract and permit.

What does it take to get a septic installer permit in Tennessee?

More than a fee. TDEC requires an applicant to install a system under the supervision of someone the department designates and to score at least 70 percent on a written exam. The conventional permit fee is $200, and each alternative type (LPP, mound, oxidation lagoon, or ATS/drip) adds $100. Every permit is annual.

Your property's construction permit is a separate thing. It says what may be built on your lot. The installer's permit says who may build it. In Maury County, TDEC's Columbia Environmental Field Office issues the construction permit, does the inspection, and holds the record.

Tennessee does let an owner or tenant install a system on their own property when it's their residence, and the owner still needs the construction permit. That exemption doesn't cover hiring an unpermitted contractor and calling yourself the installer.

Which eight questions should you ask every septic installer?

Question: 1. What's your name and category on TDEC's active list?
A good answer names: The current listing and a category matching your system
Warning sign: An old card, someone else's permit, or "the county doesn't check"

Question: 2. Which permit and design revision are you pricing?
A good answer names: The date, bedrooms or flow, tank, field, and equipment
Warning sign: A price off a verbal sketch, or a cheaper system than the permit

Question: 3. Who schedules inspection and handles corrections?
A good answer names: A named person and how it's filed
Warning sign: Everyone assumes someone else will call TDEC

Question: 4. What's included and excluded?
A good answer names: Labor, materials, models, quantities, rock, electrical, restoration
Warning sign: One lump sum with no detail

Question: 5. What triggers a change order, and at what unit prices?
A good answer names: Rock, extra depth, dewatering, haul-off, with written approval first
Warning sign: Open-ended allowances or verbal okays mid-dig

Question: 6. What warranty and service come with it?
A good answer names: Equipment models, parts and labor coverage, service provider
Warning sign: No model numbers, or no service plan for an advanced system

Question: 7. How will you protect the field and restore the yard?
A good answer names: Traffic route, fencing, weather limits, grading, seed
Warning sign: Driving and stockpiling on the field

Question: 8. What will I get at closeout?
A good answer names: Passed inspection, as-built sketch, photos, manuals, warranties
Warning sign: Final payment due before inspection

Question	A good answer names	Warning sign
1. What's your name and category on TDEC's active list?	The current listing and a category matching your system	An old card, someone else's permit, or "the county doesn't check"
2. Which permit and design revision are you pricing?	The date, bedrooms or flow, tank, field, and equipment	A price off a verbal sketch, or a cheaper system than the permit
3. Who schedules inspection and handles corrections?	A named person and how it's filed	Everyone assumes someone else will call TDEC
4. What's included and excluded?	Labor, materials, models, quantities, rock, electrical, restoration	One lump sum with no detail
5. What triggers a change order, and at what unit prices?	Rock, extra depth, dewatering, haul-off, with written approval first	Open-ended allowances or verbal okays mid-dig
6. What warranty and service come with it?	Equipment models, parts and labor coverage, service provider	No model numbers, or no service plan for an advanced system
7. How will you protect the field and restore the yard?	Traffic route, fencing, weather limits, grading, seed	Driving and stockpiling on the field
8. What will I get at closeout?	Passed inspection, as-built sketch, photos, manuals, warranties	Final payment due before inspection

What should every installer receive before bidding?

One bid package for everyone

The issued TDEC construction or repair permit and any revisions
The soil map and stamped design if one was required
A site plan showing the house, well, driveway, property lines, and any sinkholes
Access limits: gates, fences, trees, slopes, overhead lines
Existing-system details if tying in, abandoning, or repairing
Electrical, alarm, and service requirements for pumped or treatment systems
Your restoration standard for topsoil, seed, and cleanup

How do you compare itemized septic bids?

Line the bids up before you compare totals. One contractor may include the tank, risers, electrical, rock, seeding, and startup while another leaves half of that to you. The lower number may just be a smaller job.

Ask each bidder to mark every line as included, excluded, an allowance, or unit-priced. Any product swap goes through the designer and TDEC before you sign. A contractor's favorite tank can be a fine product, but it can't quietly replace what the permit says.

Bid section: Permit and design
Compare: Revisions, fees, staking, inspection scheduling
Proof at closeout: Issued documents and passed inspection

Bid section: Site work
Compare: Clearing, access, erosion control, rock, haul-off, grading
Proof at closeout: Clean, stable site with the field protected

Bid section: Tank and piping
Compare: Capacity, material, filter, risers, lids, sewer line
Proof at closeout: Models, photos, measurements

Bid section: Field
Compare: Trench or bed quantities, chambers or pipe, distribution
Proof at closeout: As-built sketch and inspection record

Bid section: Pumps and electrical
Compare: Pump, floats, panel, alarm, wiring, electrician
Proof at closeout: Settings, diagram, and test results

Bid section: Treatment and service
Compare: Unit model, startup, service contract
Proof at closeout: Registration and service schedule

Bid section: Restoration
Compare: Topsoil, seed, straw or sod, cleanup
Proof at closeout: Finished punch list

Bid section	Compare	Proof at closeout
Permit and design	Revisions, fees, staking, inspection scheduling	Issued documents and passed inspection
Site work	Clearing, access, erosion control, rock, haul-off, grading	Clean, stable site with the field protected
Tank and piping	Capacity, material, filter, risers, lids, sewer line	Models, photos, measurements
Field	Trench or bed quantities, chambers or pipe, distribution	As-built sketch and inspection record
Pumps and electrical	Pump, floats, panel, alarm, wiring, electrician	Settings, diagram, and test results
Treatment and service	Unit model, startup, service contract	Registration and service schedule
Restoration	Topsoil, seed, straw or sod, cleanup	Finished punch list

Which installer red flags should stop the project?

Not on TDEC's list

The bidder wants to use someone else's name, promises to renew later, or says licensing doesn't matter for this job.

A firm price with no permit

A firm quote shows up before there's a soil map, an issued design, or even a system type.

Design changes without approval

Fewer trenches, a different tank, or a moved field, with "the inspector won't notice."

Covering before inspection

You're asked to let the work be buried because the inspector is busy. Wait for the inspection.

A bedroom story

The contractor suggests listing fewer bedrooms on paper so the job fits the lot.

Big cash up front

Most of the money is due before mobilization, with no milestones, warranty, or change-order terms.

What should the written contract cover?

Settle these before excavation

The parties, the active installer, system category, permit, and design revision
Scope, quantities, models, exclusions, allowances, and unit prices
Schedule, weather, access, and inspection hold points
Deposit, progress payments, final payment tied to closeout, and lien releases
A written change-order process with TDEC approval before any design change
Responsibility for utility damage, field protection, and restoration
Warranty terms, emergency contact, and a certificate showing the contractor is insured
The closeout file: inspection, as-built, manuals, and service agreement

How does Maury Septic matching fit into the hiring decision?

Maury Septic is a private estimate-request service. We are not TDEC, Maury County, an engineering firm, a soil consultant, or the installer. Before we pass a request to any installer, we check its state permit against TDEC's list, and we only pass it on when the job and the company's availability line up. That check isn't a government endorsement, a permit approval, a warranty, or a promise that anyone will quote the job.

You should still recheck the TDEC list and category yourself, then verify insurance, references, the bid, and the contract. Registry status can change, and the hiring decision is yours. We ask for permit and design details because accurate scope makes for better matches, not because this site can approve anything.

1
Finish the permit work
Get the soil work, design, and construction or repair permit before asking for a firm installation quote.
2
Send a useful request
Include the property, system type, permit, bedrooms or flow, access, and timing.
3
Receive possible introductions
Participating providers may respond based on location, project type, category, and availability. A response isn't guaranteed.
4
Vet each bidder yourself
Use the live TDEC list, the eight questions, a side-by-side bid sheet, references, insurance, and a written contract.
5
Keep TDEC in the loop
Send any design, equipment, or location change through TDEC before installation.

About our sources. Maury Septic uses the sources listed below, including TDEC's installer list, permit categories, exam and fee requirements, annual expiration, the owner-installer provision in Rule 0400-48-01-.19, bid comparison, contract safeguards, and transparent matching-service limits. Follow the links for the underlying rules, fees, and guidance.

Sources and further reading

TDEC licensed installers and pumpers
Tennessee Department of Environment and Conservation
State licensing requirements and the current installer and pumper lookup.
TDEC septic installer and related permits
Tennessee Department of Environment and Conservation
Current state requirements for septic installers, alternative-system categories, examinations, annual permits, pumpers, and soil consultants.
Tennessee Rule Chapter 0400-48-01
Tennessee Secretary of State
Official current chapter text governing Tennessee subsurface sewage disposal systems.
TDEC SSDS construction permit
Tennessee Department of Environment and Conservation
Who needs a permit, application requirements, review timing, current state fees, and inspection duties.
TDEC septic services and online application
Tennessee Department of Environment and Conservation
Conventional, repair, and alternative-system applications, plus soil-map requirements.
TDEC SSDS records search
Tennessee Department of Environment and Conservation
Official state viewer for locating septic-system permits, site sketches, and related records.
TDEC SSDS permit documentation standards
Tennessee Department of Environment and Conservation
Current state policy for digital permit sketches, attachments, reproducible field references, setbacks, and FileNet record quality.

Hiring a septic installer: common questions

Where can I look up a Tennessee septic installer license?

On TDEC's Active Installers and Pumpers page. Match the legal name, the current year, and the category to your contract and permit. Permits expire December 31, so recheck if your job crosses the new year, and save a dated screenshot.

Can a conventional septic installer install an aerobic or drip system?

Only with the matching endorsement. TDEC issues separate alternative-system categories for LPP, mound, oxidation lagoon, and ATS/drip on top of the conventional permit. Check the category on the list against the system type on your permit.

Does Tennessee let a homeowner be their own septic installer?

An owner or tenant can install a system on their own property when it's their residence. You still need a TDEC construction permit and inspection. The exemption doesn't let you hire an unlicensed contractor and list yourself as the installer. Ask TDEC how it applies before relying on it.

Should I choose the lowest septic bid?

Only after the bids are lined up against the same permit and design. Compare tank, field quantities, and equipment first, then rock, electrical, restoration, and closeout. A lower total can be real value once the exclusions, allowances, and unit prices are visible.

Does Maury Septic verify every installer for me?

No. Check the installer's current TDEC permit yourself before hiring, even if the introduction comes through this site. Use the state registry linked in this guide, then verify insurance, references, the written scope, and the contract.

Permit ready for pricing

Ready to request septic installation estimates?

Share your issued permit, design, system type, and site constraints. We check an installer's state permit before passing a request along. Recheck any provider's TDEC status, insurance, and contract yourself before you hire.

Keep your permit, system sketch, and service records together. They help the next professional understand your property.