Dallas County, IA Septic Rating

Septic suitability in Dallas County, IA

Very limited

Dallas County, IA's SSURGO dominant class comes back "Very limited", covering 65.1% of the county. That reading means a conventional system is a poor bet here - it's already USDA's strictest "very limited" bucket, not a partial constraint. The county spans 588 square miles, home to 115,343 people.

What this number does and doesn't tell you

Nothing about Dallas County, IA's SSURGO figure applies to a specific address - it's a county-wide average. Budget $750-$1,850 for a real perc test on any specific parcel - that's the only figure a permit application accepts.

Dallas County: conventional vs. engineered cost

65.1% of Dallas 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.

Dallas County's rank among Iowa counties

Among the 3,058 rated counties on this site, Dallas County, IA ranks 2,608 most-constrained nationally, and 96 of 99 within Iowa.

Related guides

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