Gonzales County, TX: the USDA septic-suitability picture

Very limited

Gonzales County, TX: USDA's soil survey calls 91.8% of the county "Very limited" for a septic leach field. Practically, that rules out a simple gravity system for most of the county - 91.8% of it sits in USDA's most-constrained bucket. For scale: 1,066.686 square miles and 20,040 people call Gonzales County home.

Before you rely on this for one lot

Gonzales County's rating is an average across the whole county, not a promise about any one lot inside it. 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 Gonzales County, TX

Gonzales 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 Gonzales County, TX compares

Among the 3,058 rated counties on this site, Gonzales County, TX ranks 1,066 most-constrained nationally, and 71 of 253 within Texas.

Related guides

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