Harrison County, WV: the USDA septic-suitability picture

Very limited

Harrison County, WV's SSURGO dominant class comes back "Very limited", covering 93.2% of the county. A standard gravity system routinely fails on ground like this; the same share of the county falls in USDA's worst absorption-field bucket outright. For scale: 416.01 square miles and 64,472 people call Harrison County home.

Before you rely on this for one lot

Harrison County's rating is an average across the whole county, not a promise about any one lot inside it. The real answer for one lot is still a site-specific perc test, running about $750-$1,850 (typically near $1,300).

Budgeting for a system in Harrison County, WV

Harrison County's soil reading pushes the likely outcome toward an engineered system rather than a conventional one. 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.

Harrison County's rank among West Virginia counties

Among the 3,058 rated counties on this site, Harrison County, WV ranks 900 most-constrained nationally, and 40 of 55 within West Virginia.

Further reading

How this rating is built, and its real limits · Conventional vs. engineered septic systems