RV
RadonVerdict

County evidence note

Radon zone and test data for Indiana County, PA

County data can show why testing matters. It cannot tell you the radon level in a particular house. The only property-level answer comes from a valid test.

What the source supports

Indiana County crosses the action threshold in the official county data.

Indiana County, PA is measurement-backed for 1990-2025. The measured average is 7.3 pCi/L. The high-end signal reaches 322.4 pCi/L.

Source hierarchy: PA DEP Radon Division is used for this county, with EPA zone and Census housing data kept as supporting context. Pennsylvania values are RadonVerdict county rollups from PA DEP ZIP reports, with basement readings treated as the primary local signal and first-floor readings preserved as a separate floor context.

EPA map zone: Zone 1

The EPA map predicts broad county potential; it is not a measurement for an address.

Source: Pennsylvania DEP Radon Test Data by ZIP Code

Coverage: 1990-2025 ยท retrieved 2026-05-05

Open the original source

What to do with this information

  1. 1. Test the homeUse a valid device and record duration, placement, and conditions.
  2. 2. Interpret the resultTreat 4.0 pCi/L as the main action threshold and preserve the testing context.
  3. 3. Use qualified helpFor testing or mitigation, use state requirements and recognized proficiency programs.

Evidence profile for Indiana County

Reported average7.3 pCi/L
At or above 4.0Not available
Source test volume7,148 reported tests
Comparison cohort67

Pennsylvania values are RadonVerdict county rollups from PA DEP ZIP reports, with basement readings treated as the primary local signal and first-floor readings preserved as a separate floor context.

Nearby comparison: Closest counties by county average: Cambria County (6.8 pCi/L) is just lower, and Adams County (7.4 pCi/L) is just higher.

Editorial and Data Transparency

Author
RadonVerdict (Independent public-data software project)
Evidence Review
Official and primary sources cited below
Data Retrieved At
2026-02-24

Primary Sources