Marana, AZ Radon Mitigation and Testing

Q: What EPA Radon Zone is Marana in?

Marana is in Pima County, EPA Zone 2.

Q: How much does radon mitigation cost in Marana?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Pima County

EPA Zone 2

Positioned in Pima County northwest of Tucson, Marana's desert environment and caliche-hardpan soils create unique conditions for radon accumulation patterns. Although comprehensive testing data for zip codes 85653 and 85658 is currently limited, the Sonoran Desert's geological characteristics warrant homeowner attention to indoor air quality. Professional radon testing remains advisable for this growing community, particularly in homes with enclosed spaces below ground level.

Marana, AZ Radon Mitigation

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

Marana, AZ Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Marana Radon Facts

Key details about the radon risk profile for Marana and the 85653 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Pima County, AZ

Zip Code

85653

Predicted Screening Level

2–4 pCi/L (Zone 2)

Marana and the 85653 zip code are located in Pima County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Marana, AZ

What EPA Radon Zone is Marana in?

Marana and the 85653 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 Marana?

Radon mitigation in Marana 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 Marana?

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 with the most user-submitted radon test data in the state.

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
Gilbert	3.00 pCi/L	1
Tempe	3.00 pCi/L	1