Fairfax, VA Radon Mitigation and Testing

Q: What is the average radon level in Fairfax, VA?

Based on 3 user-submitted tests, the average radon level is 9.70 pCi/L.

Q: What EPA Radon Zone is Fairfax in?

Fairfax is in Fairfax County, EPA Zone 1.

Q: How much does radon mitigation cost in Fairfax?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Avg: 9.70 pCi/L

Fairfax County

EPA Zone 1

3 user tests

Fairfax is located in Fairfax County, Virginia. With 3 user-submitted readings averaging 9.70 pCi/L, the area exceeds the EPA's 4.0 pCi/L action threshold, and testing is strongly recommended for homeowners in the 22030 zip code.

9.70

pCi/L average

Above EPA Action Level

Based on 3 user-submitted radon tests for homes in Fairfax, VA. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Fairfax, VA Radon Mitigation

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

Fairfax, VA Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Fairfax, Virginia Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
15 pCi/L	Fairfax, VA	21-50 Years	Full Basement	Jan 2023
6 pCi/L	Fairfax, VA	51-99 Years	Full Basement	Feb 2022
8 pCi/L	Fairfax, VA	21-50 Years	Full Basement	Jun 2019

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

Fairfax Radon Facts

Key details about the radon risk profile for Fairfax and the 22030 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Fairfax County, VA

Zip Code

22030

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

9.70 pCi/L

User Tests Submitted

Fairfax and the 22030 zip code are located in Fairfax County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Fairfax, VA

What is the average radon level in Fairfax, VA?

Based on 3 user-submitted tests, the average radon level in Fairfax is 9.70 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 Fairfax in?

Fairfax and the 22030 zip code are in Fairfax County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

How much does radon mitigation cost in Fairfax?

Radon mitigation in Fairfax 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 Fairfax?

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 with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
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
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
Winchester	7.00 pCi/L	4
Williamsburg	5.75 pCi/L	4
Lovettsville	5.25 pCi/L	4
Woodbridge	4.50 pCi/L	4
Fairfax	9.67 pCi/L	3
Stafford	9.33 pCi/L	3
Louisa	8.33 pCi/L	3
Linden	7.67 pCi/L	3
Warrenton	7.67 pCi/L	3
Burke	5.67 pCi/L	3
Lynchburg	5.33 pCi/L	3