Ajo, AZ Radon Levels
Check local Ajo radon levels and find certified testing and mitigation professionals to keep your home safe
Ajo, AZ Radon Facts
EPA Radon Zone
Zone 2 — Moderate Risk
2–4 pCi/L (Zone 2)
County
Pima County, AZ
Zip Code
85321
Located in Pima County in Arizona's Sonoran Desert, Ajo sits in an area where desert soils over volcanic and metamorphic bedrock typically produce moderate radon levels. This former mining town in the 85321 zip code has limited recent testing data, though the arid climate and prevalent slab-on-grade construction generally minimize radon accumulation. Homeowners should still consider testing, particularly in homes with enclosed foundations or lower-level spaces.
Ajo, AZ Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Need Radon Mitigation or Testing in Ajo?
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Radon FAQ for Ajo, AZ
What EPA Radon Zone is Ajo in?
Ajo and the 85321 zip code are in Pima 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 Ajo?
Radon mitigation in Ajo 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 Ajo?
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 Arizona
Cities in Arizona with the most user-submitted radon test data, ranked by number of submissions.
| City | Avg User Radon Level | Submissions |
|---|---|---|
| Prescott | 6.79 pCi/L | 14 |
| Scottsdale | 7.75 pCi/L | 12 |
| Phoenix | 5.40 pCi/L | 10 |
| Mesa | 6.40 pCi/L | 5 |
| Flagstaff | 6.00 pCi/L | 5 |
| Tucson | 5.25 pCi/L | 4 |
| Payson | 6.67 pCi/L | 3 |
| Glendale | 6.50 pCi/L | 2 |
| Peoria | 3.00 pCi/L | 2 |
| Prescott Valley | 4.00 pCi/L | 1 |