R
RadonVerdict
EPA Zone Data 2026

SC Radon Levels

View EPA radon zone classifications for every county in SC. Select your county to see detailed risk data, testing recommendations, and mitigation cost estimates.

1
Zone 1
High Risk
8
Zone 2
Moderate
37
Zone 3
Low Risk

Already tested? Get your itemized mitigation cost estimate.

View SC Mitigation Cost Estimates →