Davidson County, NC Septic Rating
Septic suitability in Davidson County, NC
Very limited
USDA puts Davidson County, NC at "Very limited" for septic absorption fields, the dominant reading across 60.4% of the county's soil. This is the reading that pushes a project toward an engineered system rather than a conventional one, covering that same share of Davidson County's land. The county spans 553 square miles, home to 177,809 people.
What this number does and doesn't tell you
Nothing about Davidson County, NC's SSURGO figure applies to a specific address - it's a county-wide average. Budget $750-$1,850 for a real perc test on any specific parcel - that's the only figure a permit application accepts.
Davidson County: conventional vs. engineered cost
60.4% of Davidson 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 Davidson County, NC compares
Among the 3,058 rated counties on this site, Davidson County, NC ranks 2,719 most-constrained nationally, and 71 of 97 within North Carolina.
Further reading
How this rating is built, and its real limits · Conventional vs. engineered septic systems