Swarthmore, PA Radon Levels
Check local Swarthmore radon levels and find certified testing and mitigation professionals to keep your home safe
Swarthmore, PA Radon Facts
This Philadelphia suburb in Delaware County has measured an average radon level of 5.25 pCi/L, which exceeds EPA action guidelines. Swarthmore's housing includes both historic stone homes and mid-century suburban construction, many featuring the full basements typical of southeastern Pennsylvania. With readings in zip code 19081 ranging from 3.0 to 9.0 pCi/L, testing remains crucial for all residents regardless of home age or style.
Based on 4 user-submitted radon tests for homes in Swarthmore, PA. The EPA recommends taking action at or above 4.0 pCi/L.
Swarthmore, PA Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Need Radon Mitigation or Testing in Swarthmore?
- 100% Free, No-Obligation Quotes
- Matches You with State-Licensed Delaware County Pros
Swarthmore, PA Radon Levels
User-submitted radon test readings from homes in the Swarthmore area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 4 pCi/L | Swarthmore, PA | 51-99 Years | Partial Basement |
| 9 pCi/L | Swarthmore, PA | 51-99 Years | Partial Basement |
| 5 pCi/L | Swarthmore, PA | — | Full Basement |
| 3 pCi/L | Swarthmore, PA | 51-99 Years | Partial Basement |
Have a radon test result for Swarthmore? Submit your reading to help other homeowners.
Radon Readings Near Swarthmore, PA
Compare radon levels in Swarthmore with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Morton | 1.4 mi | 4.00 pCi/L | 1 |
| Springfield | 2.4 mi | 5.67 pCi/L | 3 |
| Media | 3.1 mi | 7.00 pCi/L | 2 |
| Clifton Heights | 3.6 mi | 5.00 pCi/L | 1 |
| Drexel Hill | 4.4 mi | 2.50 pCi/L | 2 |
| Aston | 5.1 mi | 4.00 pCi/L | 1 |
| Lansdowne | 5.3 mi | 4.00 pCi/L | 1 |
| Broomall | 5.4 mi | 7.00 pCi/L | 2 |
Delaware County Radon Profile
The bedrock and soils beneath Delaware County are classified by the EPA as Radon Zone 1, the highest-risk tier, with predicted average indoor screening levels above 4 pCi/L. Homeowner-submitted tests from 13 cities in Delaware County average 5.59 pCi/L across 22 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Radon is the second leading cause of lung cancer in the United States, and a short-term test is the only way to confirm a specific home's level in Delaware County.