Nevada County's SSURGO septic rating

Very limited

Nevada County, CA's SSURGO dominant class comes back "Very limited", covering 87.2% of the county. This is the reading that pushes a project toward an engineered system rather than a conventional one, and it covers 87.2% of Nevada County's land. For scale: 957.76 square miles and 102,195 people call Nevada County home.

Before you rely on this for one lot

This is a countywide, area-weighted figure across every soil survey map unit in Nevada County, CA - never a reading for one specific parcel. 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 Nevada County, CA

Nevada 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.

How Nevada County, CA compares

Among the 3,058 rated counties on this site, Nevada County, CA ranks 1,528 most-constrained nationally, and 40 of 57 within California.

Further reading

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