Maury County Septic FAQ

SSDS stands for Subsurface Sewage Disposal System, Tennessee's official name for a septic system. On TDEC paperwork it means the whole setup: the tank, the distribution piping, and the drainfield. Knowing the term helps when you search state records, read a permit, or fill out TDEC's online application.

For a new home in unincorporated Maury County, bring a TDEC septic permit or recertification, proof of a water tap or water source, driveway approval from the county highway department or TDOT, professionally drawn plans, and a plot plan showing property-line distances. The Building and Zoning Office is at 5 Public Square, (931) 375-3006.

The septic rules stay the same. Tennessee Rule 0400-48-01 applies across Maury County, and TDEC's Columbia field office permits systems inside city limits too. What changes is sewer: each city decides whether its lines can serve a parcel. Spring Hill adds a sewer-capacity framework, and its Williamson County side uses that county's own septic program.

A qualified soil consultant evaluates the site, TDEC issues the permit, and a permitted installer builds the approved system. Design and final inspection can follow the state route or the authorized third-party route. TDEC still issues the final approval. Advanced treatment also needs ongoing maintenance under the permit and equipment requirements.

No. Tennessee has nine contract counties that run their own septic programs, and Williamson, next door, is one of them. Maury isn't, so TDEC's Division of Water Resources handles septic permits here directly through the Columbia Environmental Field Office, which also serves 12 other Middle Tennessee counties.

The soil map: allow roughly $1,000 to $2,000, then get a consultant's quote. For systems up to 1,000 gallons per day, published TDEC permit and inspection fees total $500 conventional or $700 alternative. A survey if the lines are unclear. Electrical work for any pumped system. Clearing, seeding, and cleanup. And for an aerobic unit, a maintenance contract that lasts as long as the system does.

A number given over the phone rests on guesses. Once the installer sees the issued permit and the site, real costs show up: rock, slope, access for equipment, the distance from the house to the field, and for a replacement, where the old tank sits. Ask for a written scope tied to the permit, with any rock allowance spelled out.

No. Tennessee requires a duplicate area sized at 100 percent of the original field, but it's reserved on the permit sketch, not built. You pay to install the initial field only. The cost of the duplicate is the land itself: keep it free of buildings, pools, pavement, utility trenches, and grading so it's still usable when you need it.

No. The tank settles solids and holds grease and scum, then sends the liquid on to the drainfield, where the soil does most of the treatment. Pumped systems add a pump tank, controls, and an alarm. An aerobic unit adds treatment with air. Pumping only services the tank, so it won't fix a drainfield that's failing.

Start with the TDEC permit record, which names the system type. Then look for clues. A control panel or alarm box usually means a pumped design such as LPP, drip, or an aerobic unit. A raised, grassy hump is likely a mound. A humming blower points to aerobic treatment. No electrical parts at all usually means gravity.

An LPP system uses a pump to send measured doses of effluent through small pressurized pipes in shallow trenches. That spreads the flow evenly and lets the field sit in shallower soil than a gravity system needs. It still depends on suitable soil and a TDEC-approved design, and the pump, floats, and alarm need periodic service.

Most of the county sits on limestone, and limestone dissolves unevenly. That leaves ledges of rock close to the surface next to pockets of deep soil, plus sinkholes where the rock has given way. It's why a soil consultant digs in several spots, and why a neighbor's permit tells you little about your own lot.

A septic company, for pumping and diagnosis. TDEC doesn't do repairs. If the fix involves a failing system, TDEC issues a repair permit before anyone digs, and that permit is free apart from a $100 inspection. Call TDEC's Columbia office at (931) 380-3371 directly if sewage is reaching a creek or creating an immediate health hazard.

Call TDEC's Columbia Environmental Field Office at (931) 380-3371, or the statewide environmental line at 1-888-891-8332. Say where it is and what you're seeing, such as sewage surfacing in a yard or draining into a ditch or creek. Note dates, and take photos only from your own property or a public road.

EPA says the usual source is a roof vent or other vent pipe that lets the system's pressure equalize. Raising or cleaning the vent can help, and charcoal filters are sold for roof vents. A loose or cracked tank lid is another suspect. If the smell comes from wet ground over the drainfield, call a septic professional.

EPA recommends saving your maintenance records, and a good file makes resale easier. Keep the TDEC permit and site sketch, the tank size, every pumping date with its sludge and scum readings, and any repairs. Add pump and alarm service, and for an aerobic unit, each contract visit. Hand the whole file to the next owner.

They're worth considering. A riser brings the tank access up to ground level, so pumping and inspection don't start with digging. EPA notes that many tanks already have access risers, often a black or green disc near the house. Whatever you install, keep the lid secured and child-resistant, since unsafe septic covers have caused deaths.

Get grass growing over the field quickly so rain doesn't wash the cover soil away. Keep cars, trailers, and equipment off the tank and both field areas. Watch for low spots where trench backfill settles, and fill them with topsoil instead of letting water pond. Keep the final TDEC inspection paperwork with the permit.

Ask for the TDEC permit and site sketch, the approved bedroom count, and the system type. Then ask for pumping and repair records, the date of the last inspection, and any history of alarms or backups. For an aerobic unit, ask for the maintenance contract. Tennessee's disclosure law covers defects the seller actually knows about.

Not in unincorporated Maury County. The county's 2026 zoning ordinance requires a septic system and its field to stay on the lot they serve. Tennessee's rule also keeps tanks and fields 10 feet from property lines. Inside a city, ask the city's planning office, and expect TDEC to want the whole system on your parcel.

Yes, on qualifying lots in unincorporated Maury County. The 2026 ordinance allows up to two principal dwellings in AP (15-acre minimum) and RR (5-acre minimum), and in RG on lots of at least 5 acres. RR and RG require separate dwelling buildings to be at least 40 feet apart, or allow both units in one building with the required fire wall. One ADU may also be allowed under the district and ADU standards. Confirm the layout with Building and Zoning, then have TDEC approve wastewater disposal for all dwellings. City rules can differ.

The form asks for your name, phone, the property's city or ZIP, and the type of project. Have a few more details ready for when an installer calls: the TDEC permit or record, whether a soil map exists, the bedroom count, any symptoms and when they started, and anything that makes the site hard to reach.

Licensed installers serving Maury County can email us. Before we offer any request, we check that the company holds the applicable TDEC permit. Participating companies may pay for accepted introductions, and we don't promise any volume of requests. Homeowners are never charged for using the form.

Yes. Email us and ask. We aim to respond within 30 days, and without a request we keep records for up to 24 months after your request closes. If an installer already received your details, contact that company as well, since it's an independent business with its own records.

Email the page link and what's wrong. We check the claim against the cited source, and when a rule or number has changed, we correct the page. Septic rules and city sewer policies do change, especially in Spring Hill, so we'd rather hear about it from you than leave an old answer up.