Getting a septic system ready for fall and winter

Fall is the practical time to deal with a septic system in Middle Tennessee, for three reasons that all converge at once: the household load is about to spike, access is about to get harder, and the ground is about to stop cooperating.

The holiday loading problem

A septic system is sized for the household that normally lives in the house. Thanksgiving and Christmas suspend that arrangement.

Guests staying for a week means more showers, more laundry, more dishwasher cycles, and considerably more flushing — concentrated into a few days. A system running comfortably at four occupants can find itself at eight or ten, and drain fields fail on peak loading, not on averages.

If the tank is anywhere near due, getting it pumped before the guests arrive is materially easier than dealing with a backup on the day itself. It is also cheaper: a scheduled visit runs $300 to $525, an out-of-hours emergency $425 to $700.

The kitchen matters too. Holiday cooking sends far more fats and grease down the drain than a normal week, and grease is the material that hardens into a scum mat and clogs an effluent filter.

Access gets harder, then impossible

Frozen ground is the practical issue. Hand-digging to a buried lid is straightforward in October and considerably worse in January, which pushes the access surcharge — normally $50 to $200 — toward the top of its range in winter.

If you are going to need service between now and spring, finding and opening the lids while the ground is workable is the cheaper sequence. And if the lids are buried, fall is the sensible time to fit risers: $300 to $600 once, and the problem never recurs. Fitted during a pump-out you were having anyway, the excavation happens once rather than twice.

Leaves and the drain field

Falling leaves are not a septic problem in themselves, but two related things are.

Do not pile leaves over the drain field. A thick layer insulates the ground, and while that sounds harmless it also holds moisture against the surface and interferes with the evaporation that helps a field shed load.

Do not let leaf litter bury the lids further. This is how tanks get lost. A few seasons of undisturbed leaf fall on a wooded Joelton or Forest Hills lot is genuinely enough to put an access point under several inches of material.

Wet season is coming

Middle Tennessee winters are wet, and a field with reduced capacity will show it. If yours struggled at all during last spring’s saturated ground, it will struggle again — and the useful work is not more pumping. It is diverting surface water away from the field, making sure downspouts and driveway runoff are directed elsewhere, and having the distribution box checked so the whole field shares the load rather than one lateral drowning.

Properties in the bottomlands — the Whites Creek bottoms, Bells Bend — should expect the water table to do what it does every year, and plan around it rather than being surprised by it.

A short fall checklist

• Pump if you are due, and do it before the holidays rather than during them
• Locate the lids while the ground is soft, and consider risers if they are buried
• Keep leaves off the field and out of the access points
• Check downspouts and drainage are directed away from the field
• Keep vehicles off the field — soft autumn ground compacts easily
• Have the effluent filter cleaned, particularly before heavy holiday cooking
• Know your interval, and get it set from measured sludge depth rather than a guess

If you are hosting

One genuinely useful thing: spread the laundry out. The single most common holiday septic failure is four loads of washing on the same morning as everybody showering, all going into a tank that has nowhere to send it. Running laundry across the week instead of in one block costs nothing and prevents most of it.

Call (615) 234-9048 to book ahead of the season, or check where you stand with the urgency assessment.