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Sierra Vista, AZ Radon Levels

Check local Sierra Vista radon levels and find certified testing and mitigation professionals to keep your home safe


Sierra Vista, AZ Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)
County Cochise County, AZ
Zip Code 85635
Avg. User Level 6.00 pCi/L
User Tests 1

Located in southeastern Arizona's Cochise County near the Huachuca Mountains, Sierra Vista shows an average radon level of 6.0 pCi/L, which exceeds the EPA action threshold of 4.0 pCi/L. The area's desert basin geology over limestone bedrock contributes to elevated radon potential, making testing essential for all homes in ZIP codes 85635 and 85650.

6.00
pCi/L average
Above EPA Action Level

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

0
4.0 EPA
10+

Sierra Vista, AZ Radon Mitigation

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

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Sierra Vista, AZ Radon Levels

User-submitted radon test readings from homes in the Sierra Vista area.

Radon LevelCityHome AgeFoundation
6 pCi/L Sierra Vista, AZ 0-20 Years No Basement/All Slab

Have a radon test result for Sierra Vista? Submit your reading to help other homeowners.

Radon FAQ for Sierra Vista, AZ

What is the average radon level in Sierra Vista, AZ?
Based on 1 user-submitted test, the average radon level in Sierra Vista is 6.00 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 Sierra Vista in?
Sierra Vista and the 85635 zip code are in Cochise 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 Sierra Vista?
Radon mitigation in Sierra Vista 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 Sierra Vista?
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.

CityAvg User Radon LevelSubmissions
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