Septic suitability in Cumberland County, NJ
Very limited
Cumberland County, NJ's SSURGO dominant class comes back "Very limited", covering 61.5% of the county. That reading means a conventional system is a poor bet here - 61.5% of Cumberland County lands in the strictest "very limited" bucket USDA uses. The county spans 483.38 square miles, home to 155,678 people.
What this number does and doesn't tell you
Two lots a mile apart in Cumberland 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.
Cumberland County: conventional vs. engineered cost
61.5% of Cumberland 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, Cumberland County, NJ ranks 2,697 most-constrained nationally, and 20 of 21 within New Jersey.
Related guides
How this rating is built, and its real limits · Conventional vs. engineered septic systems