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Gainesville, VA Radon Levels

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


Gainesville, VA Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)
County Prince William County, VA
Zip Code 20155
Avg. User Level 7.00 pCi/L
User Tests 1

Located in Northern Virginia's Prince William County, this Washington metro suburb shows a radon reading of 7.0 pCi/L, significantly exceeding EPA action levels. The area's Piedmont geology features granite and schist formations that naturally contain uranium deposits. Homeowners in the 20155 area should prioritize radon testing and mitigation given the elevated risk potential.

7.00
pCi/L average
Above EPA Action Level

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

0
4.0 EPA
10+

Gainesville, VA Radon Mitigation

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

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Gainesville, VA Radon Levels

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

Radon LevelCityHome AgeFoundation
7 pCi/L Gainesville, VA 0-20 Years Partial Basement

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

Radon FAQ for Gainesville, VA

What is the average radon level in Gainesville, VA?
Based on 1 user-submitted test, the average radon level in Gainesville is 7.00 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 Gainesville in?
Gainesville and the 20155 zip code are in Prince William County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.
How much does radon mitigation cost in Gainesville?
Radon mitigation in Gainesville 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 Gainesville?
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.

Most Active Radon Markets in Virginia

Cities in Virginia with the most user-submitted radon test data, ranked by number of submissions.

CityAvg User Radon LevelSubmissions
Fredericksburg 7.29 pCi/L 7
King George 7.17 pCi/L 6
Leesburg 9.80 pCi/L 5
Chantilly 9.60 pCi/L 5
Fancy Gap 9.40 pCi/L 5
Williamsburg 5.80 pCi/L 5
Purcellville 10.75 pCi/L 4
Aldie 8.00 pCi/L 4
Front Royal 7.75 pCi/L 4
Bristol 7.50 pCi/L 4