Surprise, AZ Radon Levels
Check local Surprise radon levels and find certified testing and mitigation professionals to keep your home safe
Surprise, AZ Radon Facts
EPA Radon Zone
Zone 2 — Moderate Risk
2–4 pCi/L (Zone 2)
County
Maricopa County, AZ
Zip Code
85374
Surprise in Maricopa County represents one of the Phoenix Metro's rapidly growing suburban communities, built primarily on desert alluvial deposits over volcanic bedrock. Limited radon testing data for zip code 85374 means homeowners in this newer development should establish baseline measurements. Despite Arizona's generally lower radon potential, the area's underlying geology and modern construction methods with sealed foundations can still create conditions for radon accumulation in residential spaces.
Surprise, 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 Surprise?
- 100% Free, No-Obligation Quotes
- Matches You with State-Licensed Maricopa County Pros
1-800-299-3578
Toll-free · Mon–Fri 8am–6pm ET
Radon FAQ for Surprise, AZ
What EPA Radon Zone is Surprise in?
Surprise and the 85374 zip code are in Maricopa 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 Surprise?
Radon mitigation in Surprise 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 Surprise?
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 |