Monroe County, MS's soil, for a septic absorption field
Very limited
In Monroe County, MS, 94% of the surveyed land carries a "Very limited" rating for a standard septic drain field. This is the reading that pushes a project toward an engineered system rather than a conventional one, and it covers 94% of Monroe County's land. Monroe County covers 765.128 square miles and counts 33,483 residents.
This is a county figure, not a parcel figure
USDA's survey covers the whole of Monroe County, MS at once, not any single address. A site-specific perc test, usually $750-$1,850, is what a health department will actually require before permitting a lot in Monroe County.
System cost, conventional vs. engineered
Given Monroe 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 Monroe County, MS compares
Nationally, Monroe County, MS is the 788-most-constrained of 3,058 rated counties for septic soil. Within Mississippi alone it ranks 29 of 82.
Before you act on this
How this rating is built, and its real limits · Conventional vs. engineered septic systems