Septic suitability in Henderson County, IL

Very limited

Henderson County, IL's SSURGO dominant class comes back "Very limited", covering 60.1% of the county. That reading means a conventional system is a poor bet here - 60.1% of Henderson County lands in the strictest "very limited" bucket USDA uses. The county spans 378.793 square miles, home to 6,048 people.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Henderson County, IL - never a reading for one specific parcel. Budget $750-$1,850 for a real perc test on any specific parcel - that's the only figure a permit application accepts.

Henderson County: conventional vs. engineered cost

60.1% of Henderson 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.

How Henderson County, IL compares

Among the 3,058 rated counties on this site, Henderson County, IL ranks 2,727 most-constrained nationally, and 93 of 101 within Illinois.

Related guides

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