Septic suitability in Clatsop County, OR

Very limited

Clatsop County, OR's SSURGO dominant class comes back "Very limited", covering 89.9% of the county. This is the reading that pushes a project toward an engineered system rather than a conventional one, and it covers 89.9% of Clatsop County's land. For scale: 828.241 square miles and 41,043 people call Clatsop County home.

Before you rely on this for one lot

USDA's survey covers the whole of Clatsop County, OR at once, not any single address. 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 Clatsop County, OR

Clatsop 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 Clatsop County, OR compares

Among the 3,058 rated counties on this site, Clatsop County, OR ranks 1,275 most-constrained nationally, and 24 of 36 within Oregon.

Further reading

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