Dayton, VA Radon Mitigation and Testing

Q: What EPA Radon Zone is Dayton in?

Dayton is in Rockingham County, EPA Zone 1.

Q: How much does radon mitigation cost in Dayton?

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

Rockingham County

EPA Zone 1

Nestled in Rockingham County within Virginia's Shenandoah Valley, Dayton sits atop limestone bedrock that creates high radon potential throughout the region. Testing data is currently limited for this rural community, making professional radon assessment essential for all homeowners. The area's mix of older farmhouses with stone foundations and newer homes requires individual testing to determine radon levels.

Dayton, VA Radon Mitigation

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

Dayton, VA Radon Testing

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

Dayton Radon Facts

Key details about the radon risk profile for Dayton and the 22821 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Rockingham County, VA

Zip Code

22821

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Dayton and the 22821 zip code are located in Rockingham 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 Dayton, VA

What EPA Radon Zone is Dayton in?

Dayton and the 22821 zip code are in Rockingham 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 Dayton?

Radon mitigation in Dayton 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 Dayton?

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