Septic suitability in Fresno County, CA

Very limited

Fresno County, CA's SSURGO dominant class comes back "Very limited", covering 86.5% of the county. That reading means a conventional system is a poor bet here - 86.5% of Fresno County lands in the strictest "very limited" bucket USDA uses. For scale: 5,958.582 square miles and 1,024,125 people call Fresno County home.

Before you rely on this for one lot

Fresno 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 Fresno County, CA

Fresno 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.

Fresno County's rank among California counties

Among the 3,058 rated counties on this site, Fresno County, CA ranks 1,573 most-constrained nationally, and 41 of 57 within California.

Further reading

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