Griggs County, ND: the USDA septic-suitability picture

Very limited

USDA puts Griggs County, ND at "Very limited" for septic absorption fields, the dominant reading across 65.5% of the county's soil. That reading means a conventional system is a poor bet here - 65.5% of Griggs County lands in the strictest "very limited" bucket USDA uses. The county spans 708.685 square miles, home to 2,227 people.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Griggs County, ND - never a reading for one specific parcel. Budget $750-$1,850 for a real perc test on any specific parcel - that's the only figure a permit application accepts.

Griggs County: conventional vs. engineered cost

65.5% of Griggs County carrying a "Very limited" reading changes the realistic budget here. 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 Griggs County, ND compares

Among the 3,058 rated counties on this site, Griggs County, ND ranks 2,598 most-constrained nationally, and 34 of 53 within North Dakota.

Before you act on this

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