San Tan Valley, AZ Radon Levels
Check local San Tan Valley radon levels and find certified testing and mitigation professionals to keep your home safe
San Tan Valley, AZ Radon Facts
EPA Radon Zone
Zone 2 — Moderate Risk
2–4 pCi/L (Zone 2)
County
Pinal County, AZ
Zip Code
85140
Located in Pinal County within the Phoenix Metro's southeastern suburbs, San Tan Valley sits on desert alluvium and caliche formations that typically produce low radon levels. Testing data for zip code 85140 remains limited, highlighting the need for individual home radon testing. The area's rapidly growing residential development features predominantly modern construction with slab-on-grade foundations common in Arizona's desert communities.
San Tan Valley, 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 San Tan Valley?
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Radon FAQ for San Tan Valley, AZ
What EPA Radon Zone is San Tan Valley in?
San Tan Valley and the 85140 zip code are in Pinal 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 San Tan Valley?
Radon mitigation in San Tan Valley 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 San Tan Valley?
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 |