Callao, VA Radon Levels
Check local Callao radon levels and find certified testing and mitigation professionals to keep your home safe
Callao, VA Radon Facts
EPA Radon Zone
Zone 3 — Low Risk
< 2.0 pCi/L (Zone 3)
County
Northumberland County, VA
Zip Code
22435
Located along Virginia's Northern Neck in Northumberland County, Callao (22435) sits in EPA Zone 3 with coastal plain sediments that typically produce lower radon levels. The community's proximity to the Chesapeake Bay and predominant sandy soils generally result in minimal radon concentrations. However, since testing data remains limited for this area, homeowners should still verify radon levels through professional testing.
Callao, VA Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
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Radon FAQ for Callao, VA
What EPA Radon Zone is Callao in?
Callao and the 22435 zip code are in Northumberland County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.
How much does radon mitigation cost in Callao?
Radon mitigation in Callao 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 Callao?
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 |