Round Hill, VA Radon Mitigation and Testing

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

Based on 1 user-submitted tests, the average radon level is 14.00 pCi/L.

Q: What EPA Radon Zone is Round Hill in?

Round Hill is in Loudoun County, EPA Zone 2.

Q: How much does radon mitigation cost in Round Hill?

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

Avg: 14.00 pCi/L

Loudoun County

EPA Zone 2

1 user test

Located in Loudoun County within the Washington Metro area, Round Hill records elevated radon levels averaging 14.0 pCi/L, well above EPA action guidelines. This Virginia Piedmont community sits over granite and schist bedrock that contributes to significant radon production. Homeowners in the 20141 zip code should pursue professional radon mitigation to address these concerning exposure levels.

14.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Round Hill, VA Radon Mitigation

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

Round Hill, VA Radon Testing

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

Round Hill, Virginia Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
14 pCi/L	Round Hill, VA	21-50 Years	Full Basement	Mar 2024

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

Round Hill Radon Facts

Key details about the radon risk profile for Round Hill and the 20141 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Loudoun County, VA

Zip Code

20141

Predicted Screening Level

2–4 pCi/L (Zone 2)

Avg. User Submitted Level

14.00 pCi/L

User Tests Submitted

Round Hill and the 20141 zip code are located in Loudoun County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Round Hill, VA

What is the average radon level in Round Hill, VA?

Based on 1 user-submitted test, the average radon level in Round Hill is 14.00 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 Round Hill in?

Round Hill and the 20141 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 Round Hill?

Radon mitigation in Round Hill 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 Round Hill?

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