Septic soil in Beauregard Parish, LA, by the numbers

Very limited

Soil across 89.1% of Beauregard Parish, LA rates "Very limited" in USDA's septic-absorption-field interpretation. Expect the ground itself to work against a plain gravity system; USDA's strictest bucket alone covers 89.1% of the county. Beauregard Parish, LA is 1,157.478 square miles with a population of 36,695.

What Beauregard Parish's reading doesn't cover

Two lots a mile apart in Beauregard Parish can carry different soil, even though they share one countywide rating. A local percolation test, typically $750-$1,850 (around $1,300 typical), is the only way to know what one lot in Beauregard Parish will actually do.

What a system would cost here

With 89.1% of Beauregard 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.

Beauregard Parish's rank among Louisiana counties

Nationally, Beauregard Parish, LA is the 1,366-most-constrained of 3,058 rated counties for septic soil. Within Louisiana alone it ranks 24 of 61.

Further reading

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