Septic soil in Lynchburg city, VA, by the numbers
Somewhat limited
Soil across 54.5% of Lynchburg city, VA rates "Somewhat limited" in USDA's septic-absorption-field interpretation. It's a soil condition contractors work around routinely, with a bigger field or added fill, rather than one that forces an engineered system outright. Lynchburg city, VA is 48.917 square miles with a population of 80,301.
What Lynchburg city's reading doesn't cover
USDA's survey covers the whole of Lynchburg city, VA at once, not any single address. A local percolation test, typically $750-$1,850 (around $1,300 typical), is the only way to know what one lot in Lynchburg city will actually do.
What a system would cost here
With 54.5% of Lynchburg city rating "Somewhat limited", a standard gravity system is not a safe assumption here. The engineered-system range, $10,000-$40,000 (mound or aerobic treatment), is the more realistic number to plan around, against $3,000-$8,000 for a conventional system on the rare lot that passes.
Where this sits nationally
Nationally, Lynchburg city, VA is the 2,947-most-constrained of 3,058 rated counties for septic soil. Within Virginia alone it ranks 102 of 110.
Further reading
How this rating is built, and its real limits · How a percolation test actually works