Septic suitability in Jefferson County, NE
Very limited
Jefferson County, NE: USDA's soil survey calls 88.8% of the county "Very limited" for a septic leach field. This is the reading that pushes a project toward an engineered system rather than a conventional one, and it covers 88.8% of Jefferson County's land. The county spans 570.182 square miles, home to 7,136 people.
What this number does and doesn't tell you
This is a countywide, area-weighted figure across every soil survey map unit in Jefferson County, NE - 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.
Jefferson County: conventional vs. engineered cost
88.8% of Jefferson 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.
Where this sits nationally
Among the 3,058 rated counties on this site, Jefferson County, NE ranks 1,393 most-constrained nationally, and 31 of 93 within Nebraska.
Related guides
How this rating is built, and its real limits · Conventional vs. engineered septic systems