Septic soil in Amite County, MS, by the numbers

Very limited

91.7% of Amite County, MS's surveyed soil comes back "Very limited" in USDA's own SSURGO data, the county's dominant condition for a septic absorption field. A standard gravity system routinely fails on ground like this; the same share of the county falls in USDA's worst absorption-field bucket outright. Amite County covers 730.1 square miles and counts 12,451 residents.

This is a county figure, not a parcel figure

This is a countywide, area-weighted figure across every soil survey map unit in Amite County, MS - never a reading for one specific parcel. A site-specific perc test, usually $750-$1,850, is what a health department will actually require before permitting a lot in Amite County.

System cost, conventional vs. engineered

Given Amite 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 Amite County, MS compares

Nationally, Amite County, MS is the 1,082-most-constrained of 3,058 rated counties for septic soil. Within Mississippi alone it ranks 45 of 82.

Further reading

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