Septic soil in Hinsdale County, CO, by the numbers

Very limited

92.4% of Hinsdale County, CO's surveyed soil comes back "Very limited" in USDA's own SSURGO data, the county's dominant condition for a septic absorption field. That reading means a conventional system is a poor bet here - 92.4% of Hinsdale County lands in the strictest "very limited" bucket USDA uses. Hinsdale County, CO is 1,117.231 square miles with a population of 747.

What Hinsdale County's reading doesn't cover

This is a countywide, area-weighted figure across every soil survey map unit in Hinsdale County, CO - never a reading for one specific parcel. A local percolation test, typically $750-$1,850 (around $1,300 typical), is the only way to know what one lot in Hinsdale County will actually do.

What a system would cost here

With 92.4% of Hinsdale County 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, Hinsdale County, CO is the 996-most-constrained of 3,058 rated counties for septic soil. Within Colorado alone it ranks 8 of 63.

Before you act on this

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