Henderson County, IL Septic Rating

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 - it's already USDA's strictest "very limited" bucket, not a partial constraint. The county spans 379 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