Septic suitability in Martin County, FL

Very limited

Martin County, FL: USDA's soil survey calls 76% of the county "Very limited" for a septic leach field. That reading means a conventional system is a poor bet here - 76% of Martin County lands in the strictest "very limited" bucket USDA uses. The county spans 543.873 square miles, home to 165,666 people.

What this number does and doesn't tell you

Nothing about Martin County, FL's SSURGO figure applies to a specific address - it's a county-wide average. Budget $750-$1,850 for a real perc test on any specific parcel - that's the only figure a permit application accepts.

Martin County: conventional vs. engineered cost

76% of Martin 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, Martin County, FL ranks 2,234 most-constrained nationally, and 49 of 65 within Florida.

Before you act on this

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