Serving Williamson County and Middle Tennessee
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Septic Superior Septic Installation & Repair · Middle TN
Service Area

Septic Tank Installation in Franklin, TN

Serving Franklin · Williamson County

One Family for Franklin Septic Work

Franklin sits on the Harpeth River with Middle Tennessee limestone right underneath it. That geology decides how a septic system behaves on your property. Downtown Franklin and the Cool Springs side of 37067 run mostly on city sewer. Go west or south and that changes fast. Homes along Carters Creek Pike and the 37064 stretch toward Leiper's Fork run on private septic. Much of 37069 does the same, out past Grassland toward the Brentwood line. Those are big lots with older tanks and drain fields set in shallow soil over rock. When a tank fills up or a field stops draining, no city crew is coming out. The system belongs to you, and so does the repair. That is the call we take in Franklin.

Septic Superior is a family company. Buddy Tomlin runs it with his son. Buddy has worked septic in Williamson County since 2004, and most of that work was on Franklin ground. He knows which soils drain here and which ones fight back. We install new systems and handle full replacements. Septic tank pumping in Franklin and septic tank repair are part of the work too. We also do sewer and water line work when the line turns out to be the problem. Estimates are free, and emergency septic service is available when a system fails on you.

What We Do in Franklin

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Which parts of Franklin run on septic

Franklin runs its own water and sewer through the City of Franklin Water Management Department. That service covers the built-up core of town. The city has extended sewer to hundreds of homes that once used tanks, partly to protect the Harpeth River. Where public sewer reaches a lot inside the city, the county expects a connection.

Outside that line, septic is the job. Williamson County requires at least one acre of land for a conventional system. Grassland shows what age does to a system. The county set up a special assessment district there to bring sewer to failing homes. Franklin has grown more than fivefold since 1980, and new houses push farther out each year. Those rural lots need approved soil for the field plus a second area held in reserve.

Soil, rock, and the county permit

Williamson County is one of nine Tennessee counties that runs its own septic program. Permits come from the county Department of Sewage Disposal Management, based in Franklin. County rules sit above the state floor in places. A site needs 36 inches of natural soil over bedrock. Natural slope cannot top 25 percent.

That soil rule bites here. Middle Tennessee is karst country, where limestone dissolves into sinkholes and rock sits close to the surface. A disposal field has to stay 25 feet back from any sinkhole. Fill and compacted ground are ruled out, so a graded lot can lose its best soil. Soil work and an inspection come before any digging. Permit fees change, so check current ones with the county.

Communities & areas we serve around Franklin: Leiper's Fork, Grassland, Southall, Boyd Mill, Carters Creek Pike, Old Hillsboro Road, Temple Hills, Bethesda.

Franklin ZIP codes served: 37064, 37067, 37069.

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Serving Franklin & nearby

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(615) 957-9682
Our Services in Franklin

The Full Septic Menu, One Local Family

Franklin FAQ

Questions From Franklin Property Owners

A few of the questions we hear most around Franklin. Don't see yours? Call us and ask.

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Who issues septic permits in Franklin?
Williamson County handles it through its Department of Sewage Disposal Management in Franklin. A new system needs a construction permit. A system that surfaces sewage needs a repair permit before work starts. For a modification, the county wants a sewer availability request from the City of Franklin first.
How much does septic work cost in Franklin?
Cost tracks the site more than the job name. Soil absorption rate, depth to rock, slope, and system size all move the number. A pumping call sits well below a full install. Franklin lots with poor soil may need an alternative system, which costs more. Permit fees are set by the county. Estimates from us are free.
Why do drain fields fail on older Franklin properties?
Two reasons show up most. Shallow soil over limestone gives effluent little room, so the field saturates and surfaces. Older systems were also sized for the houses of their day. Franklin owners add bedrooms and finished space, and the load climbs past what the field can take. Drain field repair starts with finding which one is driving it.
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A new build that needs a septic system, a tank that is overdue for a pump out, or a drain field that will not dry up? Call or send the form and we will look at the job with you and price the whole thing. The estimate is free.

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