Septic suitability in Summers County, WV
Very limited
Summers County, WV's SSURGO dominant class comes back "Very limited", covering 93.4% of the county. Expect the ground itself to work against a plain gravity system; USDA's strictest bucket alone covers 93.4% of the county. The county spans 360.594 square miles, home to 11,544 people.
What this number does and doesn't tell you
Two lots a mile apart in Summers County can carry different soil, even though they share one countywide rating. Budget $750-$1,850 for a real perc test on any specific parcel - that's the only figure a permit application accepts.
Summers County: conventional vs. engineered cost
93.4% of Summers 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, Summers County, WV ranks 877 most-constrained nationally, and 38 of 55 within West Virginia.
Further reading
How this rating is built, and its real limits · Conventional vs. engineered septic systems