Waldo County's SSURGO septic rating
Very limited
Waldo County, ME's SSURGO dominant class comes back "Very limited", covering 86.1% of the county. That reading means a conventional system is a poor bet here - 86.1% of Waldo County lands in the strictest "very limited" bucket USDA uses. The county spans 730.227 square miles, home to 40,617 people.
What this number does and doesn't tell you
Waldo 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.
Waldo County: conventional vs. engineered cost
86.1% of Waldo 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.
Waldo County's rank among Maine counties
Among the 3,058 rated counties on this site, Waldo County, ME ranks 1,605 most-constrained nationally, and 8 of 16 within Maine.
Further reading
How this rating is built, and its real limits · Conventional vs. engineered septic systems