Sterling, VA Radon Levels

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

Based on 3 user-submitted tests, the average radon level is 4.30 pCi/L.

Q: What EPA Radon Zone is Sterling in?

Sterling is in Loudoun County, EPA Zone 2.

Q: How much does radon mitigation cost in Sterling?

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

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

Sterling, VA Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Loudoun County, VA

Zip Code 20164

Avg. User Level 4.30 pCi/L

User Tests 3

Sterling in Loudoun County shows radon levels averaging 4.33 pCi/L, which exceeds the EPA's 4.0 pCi/L action level and indicates the need for mitigation consideration. This rapidly growing Washington Metro suburb features extensive residential development from the 1980s onward, predominantly single-family homes with full basements built on the region's clay and residual soils. Based on recent testing across zip codes 20164-20166, homeowners should prioritize radon testing and mitigation planning.

4.30

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Sterling, VA Radon Mitigation

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Sterling, VA Radon Levels

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

Radon Level	City	Home Age	Foundation
4 pCi/L	Sterling, VA	21-50 Years	Full Basement
4 pCi/L	Sterling, VA	21-50 Years	Full Basement
5 pCi/L	Sterling, VA	21-50 Years	Full Basement

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

Radon FAQ for Sterling, VA

What is the average radon level in Sterling, VA?

Based on 3 user-submitted tests, the average radon level in Sterling is 4.30 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 Sterling in?

Sterling and the 20164 zip code are in Loudoun 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 Sterling?

Radon mitigation in Sterling 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 Sterling?

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.

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
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

Sterling, VA Radon Levels

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

Sterling, VA Radon Facts

Sterling, VA Radon Mitigation

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Sterling, VA Radon Levels

Radon FAQ for Sterling, VA

Most Active Radon Markets in Virginia

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