Lee County's SSURGO septic rating

Very limited

Lee County, IL's SSURGO dominant class comes back "Very limited", covering 83.9% of the county. Expect the ground itself to work against a plain gravity system; USDA's strictest bucket alone covers 83.9% of the county. The county spans 724.769 square miles, home to 33,544 people.

What this number does and doesn't tell you

USDA's survey covers the whole of Lee County, IL at once, not any single address. Budget $750-$1,850 for a real perc test on any specific parcel - that's the only figure a permit application accepts.

Lee County: conventional vs. engineered cost

83.9% of Lee 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.

Lee County's rank among Illinois counties

Among the 3,058 rated counties on this site, Lee County, IL ranks 1,789 most-constrained nationally, and 61 of 101 within Illinois.

Before you act on this

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