Blalock Plumbing, Electric & HVAC, Inc.
Verified against state license rosterSeptic Installation · Septic System Repair
- Phone
- 931-637-6281
- Website
- none
Marshall County
Listed by where the business is, not by who it says it serves. Every operator here holds a current state permit, and the address it is placed by comes from the state's own published list — so this is a checkable claim rather than a service-area promise. A Tennessee installer permit is valid statewide, so operators further out can work here too; these are simply the ones closest to you.
Septic Installation · Septic System Repair
Septic Installation · Septic System Repair
Septic Installation · Septic System Repair
Septic Installation · Septic System Repair
Septic Installation · Septic System Repair
Septic Tank Pumping
Septic Installation · Septic System Repair
Septic Installation · Septic System Repair
Septic Installation · Septic Tank Pumping · Septic System Repair
Septic Installation · Septic System Repair
Septic Installation · Septic System Repair
Septic Installation · Septic System Repair
Septic Installation · Septic System Repair
Septic Installation · Septic System Repair
Septic Installation · Septic System Repair
Septic Installation · Septic System Repair
Septic Installation · Septic System Repair
Septic Installation · Septic System Repair
Septic Installation · Septic System Repair
Septic Installation · Septic System Repair
Septic Installation · Septic System Repair
Septic Installation · Septic System Repair
Septic Installation · Septic System Repair
The USDA has already rated this ground for exactly one use: a septic tank absorption field. Within 4 miles of Lewisburg — 32,008 acres across 52 soil map units — it rates 73.2% of the land very limited for that use and 9.8% somewhat limited, leaving 2.3% with no rated limitation.
A rating on its own tells you nothing you can act on. The reasons do, and around Lewisburg the leading one is depth to bedrock on 56.2% of the mapped area, followed by slow water movement on 52.5%. In full:
| Limiting feature | Share of area | What it means on site |
|---|---|---|
| Depth to bedrock | 56.2% | Bedrock is too shallow to fit a trench above it |
| Slow water movement | 52.5% | Water moves through the soil too slowly for a drain field to keep up |
| Slope | 23% | The ground is too steep for a conventional field |
| Seepage, bottom layer | 12.4% | The layer beneath the trench is porous enough that effluent could reach groundwater without being filtered |
| Depth to saturated zone | 8.1% | A seasonal water table sits too close to the surface |
Shares overlap: most soils here are limited for more than one reason at once, so these do not sum to 83%.
The named soils and land types that make up most of the ground around Lewisburg. Talbott alone accounts for 27% of it.
| Soil or land type | Share | Drainage | Slope | Depth to bedrock | Septic rating |
|---|---|---|---|---|---|
| Talbott | 27% | Well drained | 2 to 15% | 32 in | Very limited |
| Rock outcrop | 14.2% | — | 2 to 50% | 0 in | Somewhat limited |
| Stiversville | 5.8% | Well drained | 2 to 35% | 53 in | Very limited |
| Armour | 4.8% | Well drained | 2 to 20% | None in profile | Very limited |
| Marsh | 4.5% | Well drained | 5 to 35% | 23 in | Very limited |
“None in profile” means SSURGO records no bedrock or other restrictive layer within the depth it describes, not that none exists.
This is limestone country, and around Lewisburg the rock is close enough to the surface to be the governing constraint. A drain field is a shallow excavation: the trench has to sit in natural soil, with room beneath it for effluent to move down and be treated. Rock under the trench does not treat anything, and it cannot be solved by digging deeper or by blasting — breaking rock produces a hole, not a soil profile. What a shallow site usually means in practice is a shallow-placement or low-pressure pipe design, imported fill, or a field sited well away from the house on whatever part of the lot runs deepest — which is why a soil map is worth having before you decide where the house goes.
The ground around Lewisburg holds water. Tennessee measures this as an absorption rate in minutes per inch, and slow soil does not fail a site so much as enlarge it: the slower the rate, the more trench length the same household needs, and past a point a conventional field stops being approvable at all. A slow site is normally still buildable on a low-pressure pipe or drip design, and that is the point at which the installer list matters, because most licence holders in Tennessee are not endorsed for either.
Area of interest: a 4-mile radius around the USGS Geographic Names centre point for Lewisburg (GNIS 1291094, 35.4492, -86.7889), chosen because five of this state's communities are unincorporated and have no boundary to use, and because the lots that need a septic permit are in the ring around a town rather than inside it. Soil from USDA-NRCS Soil Data Access, SSURGO interpretation “ENG - Septic Tank Absorption Fields”, area-weighted by mapped acreage and by each component's share of its map unit. Survey areas: Marshall County, Tennessee (2025-08-29). Retrieved 2026-09-09.
This is a survey, not a soil map for your lot. A permit needs a high-intensity map of the specific parcel, produced by a TDEC-approved soil consultant — see soil map vs perc test.
Septic permitting in Marshall County is administered by the State of Tennessee, not the county health department. See the Marshall County detail →