What East Feliciana Parish, LA's soil rates for a septic system
Very limited
Soil across 87.7% of East Feliciana Parish, LA rates "Very limited" in USDA's septic-absorption-field interpretation. That reading means a conventional system is a poor bet here - 87.7% of East Feliciana Parish lands in the strictest "very limited" bucket USDA uses. East Feliciana Parish, LA is 453.293 square miles with a population of 19,112.
What East Feliciana Parish's reading doesn't cover
Nothing about East Feliciana Parish, LA's SSURGO figure applies to a specific address - it's a county-wide average. A local percolation test, typically $750-$1,850 (around $1,300 typical), is the only way to know what one lot in East Feliciana Parish will actually do.
What a system would cost here
With 87.7% of East Feliciana Parish rating "Very limited", a standard gravity system is not a safe assumption here. The engineered-system range, $10,000-$40,000 (mound or aerobic treatment), is the more realistic number to plan around, against $3,000-$8,000 for a conventional system on the rare lot that passes.
Where this sits nationally
Nationally, East Feliciana Parish, LA is the 1,491-most-constrained of 3,058 rated counties for septic soil. Within Louisiana alone it ranks 27 of 61.
Related guides
How this rating is built, and its real limits · Conventional vs. engineered septic systems