Freestone County, TX: the USDA septic-suitability picture
Very limited
Freestone County, TX: USDA's soil survey calls 71.8% of the county "Very limited" for a septic leach field. A standard gravity system routinely fails on ground like this; the same share of the county falls in USDA's worst absorption-field bucket outright. The county spans 877.731 square miles, home to 20,645 people.
What this number does and doesn't tell you
Freestone County's rating is an average across the whole county, not a promise about any one lot inside it. Budget $750-$1,850 for a real perc test on any specific parcel - that's the only figure a permit application accepts.
Freestone County: conventional vs. engineered cost
71.8% of Freestone County carrying a "Very limited" reading changes the realistic budget here. 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.
Freestone County's rank among Texas counties
Among the 3,058 rated counties on this site, Freestone County, TX ranks 2,408 most-constrained nationally, and 191 of 253 within Texas.
Related guides
How this rating is built, and its real limits · Conventional vs. engineered septic systems