Baldwin County, AL's soil, for a septic absorption field
Very limited
Soil across 83.5% of Baldwin County, AL rates "Very limited" in USDA's septic-absorption-field interpretation. That reading means a conventional system is a poor bet here - 83.5% of Baldwin County lands in the strictest "very limited" bucket USDA uses. Baldwin County, AL is 1,589.943 square miles with a population of 261,608.
What Baldwin County's reading doesn't cover
Two lots a mile apart in Baldwin County can carry different soil, even though they share one countywide rating. A local percolation test, typically $750-$1,850 (around $1,300 typical), is the only way to know what one lot in Baldwin County will actually do.
What a system would cost here
With 83.5% of Baldwin 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.
How Baldwin County, AL compares
Nationally, Baldwin County, AL is the 1,819-most-constrained of 3,058 rated counties for septic soil. Within Alabama alone it ranks 24 of 67.
Related guides
How this rating is built, and its real limits · Conventional vs. engineered septic systems