Washington County's SSURGO septic rating

Very limited

Washington County, OH: USDA's soil survey calls 96.6% of the county "Very limited" for a septic leach field. That reading means a conventional system is a poor bet here - 96.6% of Washington County lands in the strictest "very limited" bucket USDA uses. The county spans 632.162 square miles, home to 58,332 people.

What this number does and doesn't tell you

Washington County's rating is an average across the whole county, not a promise about any one lot inside it. Budget $750-$1,850 for a real perc test on any specific parcel - that's the only figure a permit application accepts.

Washington County: conventional vs. engineered cost

96.6% of Washington 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.

Washington County's rank among Ohio counties

Among the 3,058 rated counties on this site, Washington County, OH ranks 432 most-constrained nationally, and 45 of 87 within Ohio.

Further reading

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