Septic service
Septic Tank Replacement in Ooltewah, TN
When the tank itself is finished — not the field, not a baffle, the tank. Permitted, inspected, and done without tearing up more yard than it has to.
Most people who call us about replacing a septic tank have already had the conversation they were dreading. Somebody pumped it, looked inside, and said the tank is gone. What they usually have not been told is whether the whole system is gone with it, and that distinction is worth a lot of money.
The tank and the drain field fail for different reasons and on different timelines. A steel tank rusts through from the lid down and can be finished at twenty-five years while the field it feeds is still working perfectly. A concrete tank can outlive two drain fields. So the first thing we do is establish which part has actually failed, because replacing a tank is a fraction of the cost of replacing a system, and nobody should pay for the larger job without evidence that they need it.
When the tank genuinely is the problem, this is a one-to-two-day job on most Ooltewah and Collegedale lots. The permit is the part that takes planning, not the digging.
Signs the tank itself is the problem
A steel tank past about twenty-five years
Steel tanks corrode from the top down because that is where the moist air sits. The lid goes first, which is also the dangerous part — a rusted steel lid will hold a lawnmower right up until it does not.
Structural cracks in the walls or floor
A hairline crack above the water line can sometimes be sealed. Cracks in the floor or lower walls let groundwater in and effluent out, and patching those buys a season at best.
The tank is losing level between pump-outs
A tank that drops below the outlet on its own is leaking. That is not a drain field problem, and no amount of field work will fix it.
The lid or risers have collapsed
A collapsing lid is a genuine safety hazard, particularly on a property with children or livestock. We treat this one as urgent.
The tank is undersized for the house now
Adding bedrooms raises the design flow. A tank sized for three bedrooms serving a five-bedroom house never gets the retention time it needs, and the field pays for it.
An inspection found the tank failed but the field sound
This is the best version of bad news. We inspect first precisely so we can tell you the field has life left in it.
How we work
How a tank replacement runs
- 1
Confirm it is the tank
We open the tank, check the water level against the outlet, look at the walls and floor, and probe the field. If the field is also done, you need to know that before you spend anything.
- 2
Permit the replacement
Tennessee requires county approval to replace a tank, even like-for-like. We prepare the package for the Hamilton County environmental office and the Tennessee Department of Environment and Conservation.
- 3
Pump and locate
The old tank is pumped out before anything moves. We locate the inlet line, the outlet line and the distribution box so the excavation stays as tight as possible.
- 4
Remove or abandon the old tank
An old tank cannot simply be left in the ground full. It is pumped, then either removed or crushed and backfilled so it can never become a void. We do this to code, not to whatever is quickest.
- 5
Set the new tank
The new tank goes in level on a prepared bed with inlet and outlet elevations matched to the existing line and field, so the system keeps running on gravity if it did before.
- 6
Inspect, backfill and restore
The county inspects before cover. Then we backfill, grade so surface water runs away from the tank and field, and leave the ground seeded.
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Replacing the tank without replacing the field
This is the whole point of calling someone who will look before quoting. A drain field is the expensive half of a septic system, and it does not automatically fail when the tank does. Plenty of the tanks we replace are sitting in front of fields with years left in them.
We probe the field and check for ponding, surfacing and saturation before we quote. If the field is sound, the quote is for a tank. If the field is marginal, we say so and explain what we would watch for, rather than rolling it into the job to be safe.
If the field is genuinely finished too, replacing both at once is cheaper than two separate mobilisations, and we will show you that arithmetic rather than asking you to take it on trust. That conversation belongs on the drain field replacement page.
Why the old tank cannot just be left there
An abandoned septic tank is a void in the ground with a lid that is already failing. Left full and covered, it becomes a collapse hazard in a yard where people walk, and it keeps leaking whatever is in it.
Tennessee rules are specific about this: the tank is pumped, and then it is either removed or its lid is broken in and the shell backfilled so nothing can cave. It adds a few hours to the job. It is not optional, and a quote that does not mention it is a quote worth questioning.
What this looks like on a rural Hamilton County lot
Most of our replacements are not on tidy suburban squares. They are on acreage off Snow Hill, Mahan Gap and the roads out toward Birchwood and Georgetown, where the tank is a long way from anywhere a truck can park and the driveway is the only hard surface on the property.
That changes the job in practical ways. We plan the machine route before the day, we lay down protection on the drive, and we work out where the spoil goes so you are not left with a mound of clay on your lawn. On wet ground we will sometimes wait a week rather than rut a pasture, and we will tell you that up front.
What changes the price of a tank replacement
We quote after we have seen the tank, because the two things that move this number most — what is in the ground and how we get a machine to it — cannot be guessed over the phone. Estimates are free, and we price the old tank removal as a line item rather than burying it.
- Tank size and material
- Design flow is set by bedroom count, so a larger house needs a larger tank. Concrete is the usual choice here; plastic and fibreglass cost differently and suit different sites.
- What happens to the old tank
- Removing a tank whole costs more than crushing and backfilling it in place, and some sites only allow one of the two. Either way it has to be pumped first.
- Access for equipment
- A tank thirty feet from a driveway is a different job from one behind a fence, under a deck, or past a septic field we must not drive across. Long walks mean smaller machines and more hours.
- Depth and groundwater
- A deep tank or a high water table means shoring, dewatering, or both. This is common on the lower-lying lots near the creeks.
- Condition of the line and distribution box
- If the inlet line or the D-box is also failing, replacing them while the ground is open costs far less than coming back.
- Permit and inspection fees
- County fees are what they are. We pass them through at cost and show them separately on the quote.
We do not publish flat prices because two jobs on the same street can cost different amounts, and a quoted number that changes on arrival helps nobody. Every job starts with a free written estimate.
Questions
Septic Tank Replacement in Ooltewah — answered
It comes down to where the damage is. Baffles, tees, lids, risers and effluent filters are components, and replacing them is a repair that costs a small fraction of a new tank. Structural cracks in the walls or floor, a steel tank that has rusted through, or a tank that will not hold its level mean replacement. We open the tank and look before we tell you which one you are dealing with.
Repair is almost always cheaper when repair is genuinely an option — often by an order of magnitude. The honest version of that answer is that a repair only saves money if it lasts. Patching a structurally cracked tank or a rusted steel one buys a season and you pay for the replacement anyway, plus the repair. We will tell you when a repair is a real fix and when it is just delay.
Age and material, far more than abuse. Steel tanks installed through the 1970s and 1980s are reaching the end of their service life across this area, and they fail in a predictable way — the lid corrodes first, then the upper walls. Concrete tanks usually fail at the baffles long before the shell goes, which is why so many of the tanks people assume are dead turn out to need a component.
A concrete tank that is pumped on a sensible interval commonly runs forty years or more. Steel is the short one, often twenty-five to thirty. Plastic and fibreglass sit in between and are more sensitive to how carefully they were installed and backfilled. Pumping frequency matters less to the tank than it does to the drain field, but it is still the cheapest thing you can do for both.
Yes, including for a like-for-like replacement. The work has to be permitted and inspected before it is covered. We prepare and submit the package and schedule the inspection as part of the job, so there is no gap where you are holding paperwork you did not expect.
On a straightforward replacement with decent access, excavation through backfill is typically one to two days, with the county inspection fitting between set and cover. Restoration is same-day. Difficult access, a deep tank, or groundwater can extend that, and we will say so when we quote rather than when we arrive.
Usually yes — frost depth here is shallow enough that it rarely stops work. Wet ground is the real constraint, not cold. Saturated clay is hard to work cleanly and easy to damage, so in a wet spell we will often recommend waiting a few days rather than leaving you with a rutted yard.
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Septic Tank Replacement — free estimate, fair price
Call and describe what you are seeing. We will tell you what it usually means, what it will take to check, and what it is likely to cost.
- Licensed septic technician
- 22 Google reviews
- Free estimates on every job
- Locally owned & operated