Drain Field Service in McNairy County, TN
The drain field is the most expensive part of a septic system to replace. We always try to restore a failing field first — jet-clean the lines, treat with bacteria/enzyme products, replace only the sections that have truly failed.
Call (731) 982-2187
Signs Your Drain Field Is Failing
- Wet, soggy, or pooling water in the area above the field, especially after rain
- Bright green stripes of fast-growing grass over the laterals
- Sewage smell in the yard
- Slow drains in the house even right after a pumping
- Sewage backing up into the lowest fixtures in the house
- Algae or moss growth where it shouldn't be
Why Drain Fields Fail
- Solids escaping the tank — the #1 cause. Usually because the tank wasn't pumped on schedule.
- Compaction from cars, equipment, or livestock driving over the field
- Tree roots growing into the laterals
- Hydraulic overload — too much water flow for the field's size (long showers, leaky toilets, undersized field)
- Age — even properly maintained fields eventually wear out (30-40 years typical lifespan)
Restoration vs. Replacement
If we catch a field failure early, restoration techniques can extend the life by years:
- Jet-cleaning the laterals to clear partial clogs
- Bacteria / enzyme treatments to restart the biological action in compacted soil
- Partial replacement — replacing only the failed sections while keeping the healthy ones
- Resting a field by routing flow to an alternate area while bacteria recover
If the field has truly failed — multiple laterals collapsed, soil saturated past recovery, drain field aged out — full replacement is the right call. We design a new field correctly sized for the home and current soil conditions, often relocated to a fresh part of the yard.
What You Can Do to Save Your Field
- Pump the tank on schedule (every 3-5 years for most homes)
- Don't park cars or run equipment over the field
- Don't plant trees within 30 feet of the field
- Fix toilet leaks fast — a slow toilet leak can add hundreds of gallons a day to the field
- Spread laundry loads across multiple days, not all on Saturday
- Don't pour grease, chemicals, or non-flushable items down drains
How We Price Drain Field Work
Restoration is dramatically cheaper than replacement. Cost depends on what's needed — cleaning, partial replacement, or full new field. We give a written estimate after diagnosis. See how our pricing works.
Get a Drain Field Assessment
Call (731) 982-2187 or request a site walk. Early intervention often saves the field.