Saint Johns, AZ Radon Levels
Check local Saint Johns radon levels and find certified testing and mitigation professionals to keep your home safe
Saint Johns, AZ Radon Facts
EPA Radon Zone
Zone 2 — Moderate Risk
2–4 pCi/L (Zone 2)
County
Apache County, AZ
Zip Code
85936
Located in eastern Arizona's Apache County on the Colorado Plateau, Saint Johns falls within EPA Zone 2 with moderate radon potential expected across the 85936 zip code. Current testing data remains insufficient for this high-desert community. Arizona's diverse geology, ranging from volcanic rocks to sedimentary formations, combined with the area's mix of older adobe-style homes and newer construction, makes professional radon testing valuable for determining individual property exposure levels.
Saint Johns, 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 Saint Johns?
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Radon FAQ for Saint Johns, AZ
What EPA Radon Zone is Saint Johns in?
Saint Johns and the 85936 zip code are in Apache 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 Saint Johns?
Radon mitigation in Saint Johns 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 Saint Johns?
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 |