Lincoln County's SSURGO septic rating

Very limited

Lincoln County, TN's SSURGO dominant class comes back "Very limited", covering 84% of the county. This is the reading that pushes a project toward an engineered system rather than a conventional one, and it covers 84% of Lincoln County's land. For scale: 570.342 square miles and 36,751 people call Lincoln County home.

Before you rely on this for one lot

USDA's survey covers the whole of Lincoln County, TN at once, not any single address. The real answer for one lot is still a site-specific perc test, running about $750-$1,850 (typically near $1,300).

Budgeting for a system in Lincoln County, TN

Lincoln County's soil reading pushes the likely outcome toward an engineered system rather than a conventional one. Conventional systems run $3,000-$8,000 where they pass; where they don't, engineered alternatives (mound or aerobic treatment, whichever the health department requires) run $10,000-$40,000 - budget toward the higher figure until a perc test says otherwise.

Where this sits nationally

Among the 3,058 rated counties on this site, Lincoln County, TN ranks 1,778 most-constrained nationally, and 39 of 95 within Tennessee.

Further reading

How this rating is built, and its real limits · Conventional vs. engineered septic systems