Septic soil in Nacogdoches County, TX, by the numbers

Very limited

83.5% of Nacogdoches County, TX's surveyed soil comes back "Very limited" in USDA's own SSURGO data, the county's dominant condition for a septic absorption field. Expect the ground itself to work against a plain gravity system; USDA's strictest bucket alone covers 83.5% of the county. Nacogdoches County covers 946.324 square miles and counts 65,728 residents.

This is a county figure, not a parcel figure

USDA's survey covers the whole of Nacogdoches County, TX at once, not any single address. A site-specific perc test, usually $750-$1,850, is what a health department will actually require before permitting a lot in Nacogdoches County.

System cost, conventional vs. engineered

Given Nacogdoches County's rating, plan for the engineered-system range rather than the conventional one. The engineered-system range, $10,000-$40,000 (mound or aerobic treatment), is the more realistic number to plan around, against $3,000-$8,000 for a conventional system on the rare lot that passes.

Where this sits nationally

Nationally, Nacogdoches County, TX is the 1,821-most-constrained of 3,058 rated counties for septic soil. Within Texas alone it ranks 132 of 253.

Further reading

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