Richland County's SSURGO septic rating

Very limited

Richland County, ND: USDA's soil survey calls 93.3% of the county "Very limited" for a septic leach field. Expect the ground itself to work against a plain gravity system; USDA's strictest bucket alone covers 93.3% of the county. The county spans 1,435.674 square miles, home to 16,658 people.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Richland 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.

Richland County: conventional vs. engineered cost

93.3% of Richland 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.

Richland County's rank among North Dakota counties

Among the 3,058 rated counties on this site, Richland County, ND ranks 889 most-constrained nationally, and 4 of 53 within North Dakota.

Before you act on this

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