Septic soil in Val Verde County, TX, by the numbers

Very limited

In Val Verde County, TX, 91.7% of the surveyed land carries a "Very limited" rating for a standard septic drain field. Practically, that rules out a simple gravity system for most of the county - 91.7% of it sits in USDA's most-constrained bucket. Val Verde County, TX is 3,144.75 square miles with a population of 47,999.

What Val Verde County's reading doesn't cover

USDA's survey covers the whole of Val Verde County, TX at once, not any single address. A local percolation test, typically $750-$1,850 (around $1,300 typical), is the only way to know what one lot in Val Verde County will actually do.

What a system would cost here

With 91.7% of Val Verde County rating "Very limited", a standard gravity system is not a safe assumption here. 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, Val Verde County, TX is the 1,074-most-constrained of 3,058 rated counties for septic soil. Within Texas alone it ranks 72 of 253.

Before you act on this

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