Oktibbeha County, MS: the USDA septic-suitability picture

Very limited

Oktibbeha County, MS's SSURGO dominant class comes back "Very limited", covering 98.2% of the county. Practically, that rules out a simple gravity system for most of the county - 98.2% of it sits in USDA's most-constrained bucket. The county spans 457.626 square miles, home to 51,965 people.

What this number does and doesn't tell you

Two lots a mile apart in Oktibbeha County can carry different soil, even though they share one countywide rating. Budget $750-$1,850 for a real perc test on any specific parcel - that's the only figure a permit application accepts.

Oktibbeha County: conventional vs. engineered cost

98.2% of Oktibbeha County carrying a "Very limited" reading changes the realistic budget here. Conventional systems run $3,000-$8,000 where they pass; where they don't, engineered alternatives (mound or aerobic treatment, whichever the health department requires) run $10,000-$40,000 - budget toward the higher figure until a perc test says otherwise.

Oktibbeha County's rank among Mississippi counties

Among the 3,058 rated counties on this site, Oktibbeha County, MS ranks 214 most-constrained nationally, and 10 of 82 within Mississippi.

Before you act on this

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