Septic soil in Deaf Smith County, TX, by the numbers

Very limited

In Deaf Smith County, TX, 71.4% 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 - 71.4% of it sits in USDA's most-constrained bucket. Deaf Smith County, TX is 1,496.822 square miles with a population of 18,495.

What Deaf Smith County's reading doesn't cover

This is a countywide, area-weighted figure across every soil survey map unit in Deaf Smith County, TX - never a reading for one specific parcel. A local percolation test, typically $750-$1,850 (around $1,300 typical), is the only way to know what one lot in Deaf Smith County will actually do.

What a system would cost here

With 71.4% of Deaf Smith 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, Deaf Smith County, TX is the 2,426-most-constrained of 3,058 rated counties for septic soil. Within Texas alone it ranks 193 of 253.

Before you act on this

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