Liberty County's SSURGO septic rating
Very limited
Liberty County, TX: USDA's soil survey calls 98.4% of the county "Very limited" for a septic leach field. That reading means a conventional system is a poor bet here - 98.4% of Liberty County lands in the strictest "very limited" bucket USDA uses. The county spans 1,158.482 square miles, home to 115,042 people.
What this number does and doesn't tell you
USDA's survey covers the whole of Liberty County, TX at once, not any single address. Budget $750-$1,850 for a real perc test on any specific parcel - that's the only figure a permit application accepts.
Liberty County: conventional vs. engineered cost
98.4% of Liberty 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.
Liberty County's rank among Texas counties
Among the 3,058 rated counties on this site, Liberty County, TX ranks 183 most-constrained nationally, and 12 of 253 within Texas.
Before you act on this
How this rating is built, and its real limits · Conventional vs. engineered septic systems