Franklin County's SSURGO septic rating

Very limited

Franklin County, TX's SSURGO dominant class comes back "Very limited", covering 91.7% of the county. Practically, that rules out a simple gravity system for most of the county - 91.7% of it sits in USDA's most-constrained bucket. For scale: 284.403 square miles and 10,912 people call Franklin County home.

Before you rely on this for one lot

USDA's survey covers the whole of Franklin County, TX 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 Franklin County, TX

Franklin 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.

How Franklin County, TX compares

Among the 3,058 rated counties on this site, Franklin County, TX ranks 1,084 most-constrained nationally, and 76 of 253 within Texas.

Before you act on this

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