LaMoure County's SSURGO septic rating
Somewhat limited
LaMoure County, ND: USDA's soil survey calls 71.2% of the county "Somewhat limited" for a septic leach field. A conventional system can still work here with design changes - a larger field, added fill, or a shallower layout - but it isn't guaranteed. For scale: 1,146.005 square miles and 4,051 people call LaMoure County home.
Before you rely on this for one lot
This is a countywide, area-weighted figure across every soil survey map unit in LaMoure County, ND - 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 LaMoure County, ND
LaMoure 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 LaMoure County, ND compares
Among the 3,058 rated counties on this site, LaMoure County, ND ranks 3,020 most-constrained nationally, and 53 of 53 within North Dakota.
Related guides
How this rating is built, and its real limits · How a percolation test actually works