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Benson, NC Radon Levels

Check local Benson radon levels and find certified testing and mitigation professionals to keep your home safe


Benson, NC Radon Facts

EPA Radon Zone Zone 3 — Low Risk < 2.0 pCi/L (Zone 3)
County Johnston County, NC
Zip Code 27504
Avg. User Level 5.00 pCi/L
User Tests 1

Benson rests in Johnston County as part of the Raleigh Metro area, recording an average radon level of 5.0 pCi/L, which exceeds the EPA's recommended action threshold. The town's location in North Carolina's Coastal Plain transition zone features varied soil types over underlying sedimentary formations that can produce moderate radon levels. Homeowners in zip code 27504 should consider radon testing and mitigation given this elevated reading, particularly in homes with basements or crawl space foundations where radon can accumulate.

5.00
pCi/L average
Above EPA Action Level

Based on 1 user-submitted radon test for homes in Benson, NC. The EPA recommends taking action at or above 4.0 pCi/L.

0
4.0 EPA
10+

Benson, NC Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

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Benson, NC Radon Levels

User-submitted radon test readings from homes in the Benson area.

Radon LevelCityHome AgeFoundation
5 pCi/L Benson, NC 21-50 Years No Basement/All Slab

Have a radon test result for Benson? Submit your reading to help other homeowners.

Radon Readings Near Benson, NC

Compare radon levels in Benson with the closest nearby cities that have user-submitted test data.

CityDistanceAvg User LevelReadings
Lillington 21.9 mi 5.00 pCi/L 2
Apex 27.7 mi 3.50 pCi/L 2
Wendell 28.5 mi 20.00 pCi/L 1
Cary 29.6 mi 5.00 pCi/L 4
Raleigh 30.1 mi 9.00 pCi/L 1
Zebulon 32.2 mi 9.00 pCi/L 1
Fayetteville 32.4 mi 5.00 pCi/L 1
Wake Forest 39.9 mi 4.50 pCi/L 2

Johnston County Radon Profile

Johnston County is classified as EPA Radon Zone 3, the lowest predicted-risk tier, with modeled indoor screening averages below 2 pCi/L. Homeowner-submitted tests from 1 city in Johnston County average 5.00 pCi/L across 1 test — 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 Johnston County.

Radon FAQ for Benson, NC

What is the average radon level in Benson, NC?
Based on 1 user-submitted test, the average radon level in Benson is 5.00 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.
What EPA Radon Zone is Benson in?
Benson and the 27504 zip code are in Johnston County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.
How much does radon mitigation cost in Benson?
Radon mitigation in Benson typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.
Should I test for radon if I'm buying a home in Benson?
Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.