Is Saluda County, SC a radon risk area?

EPA places Saluda County in Zone 3 - Low Potential — a predicted county-wide average indoor radon level below 2 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Saluda County sits at the 13th percentile nationally for radon potential — above 13 of every 100 rated counties.

How Saluda County compares

About 19,452 people live in Saluda County, South Carolina, spread over 453.213 square miles. Population density there runs about 43 people per square mile. Rank 633 by population within its EPA zone puts Saluda County at the 39th percentile among zone peers. EPA's geology-based Region 4 groups Saluda County with 735 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Saluda County's predicted average sits below the national indoor average of about 1.3 pCi/L, well under EPA's 4 pCi/L action level. Low doesn't mean zero: EPA's own data shows homes in Zone 3 counties like Saluda County testing above the action level often enough that skipping a test isn't the safe assumption.

If Saluda County tests above the action level

Nothing about Saluda County's EPA zone changes the mitigation number: $800–$2,500 nationally (around $1,200 typical), set by the house's foundation rather than the county it sits in — and only relevant once a test actually clears 4 pCi/L.

Find South Carolina's state radon program

Saluda County's test kit answers today; a Airthings radon monitor keeps answering for Saluda County over time. Affiliate link, RadonZoneCheck earns a commission there, at no extra cost to you. Use code RADONZONE-10OFF at checkout for 10% off.

More on how this number was built

Saluda County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.