What Coryell County, TX's soil rates for a septic system

Very limited

Soil across 88.4% of Coryell County, TX rates "Very limited" in USDA's septic-absorption-field interpretation. Expect the ground itself to work against a plain gravity system; USDA's strictest bucket alone covers 88.4% of the county. Coryell County covers 1,052.247 square miles and counts 86,370 residents.

This is a county figure, not a parcel figure

Coryell County's rating is an average across the whole county, not a promise about any one lot inside it. A site-specific perc test, usually $750-$1,850, is what a health department will actually require before permitting a lot in Coryell County.

System cost, conventional vs. engineered

Given Coryell 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.

How Coryell County, TX compares

Nationally, Coryell County, TX is the 1,428-most-constrained of 3,058 rated counties for septic soil. Within Texas alone it ranks 107 of 253.

Before you act on this

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