Sun City West, AZ Radon Mitigation and Testing

Q: What EPA Radon Zone is Sun City West in?

Sun City West is in Maricopa County, EPA Zone 2.

Q: How much does radon mitigation cost in Sun City West?

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

Maricopa County

EPA Zone 2

Located in Maricopa County within the Phoenix Metro area, Sun City West currently has limited radon testing data available. The community's desert location and typical slab-on-grade construction patterns found in zip code 85375 generally correlate with lower radon risk. However, homeowners should still consider testing, as radon levels can vary significantly even within Arizona's arid climate zones.

Sun City West, AZ Radon Mitigation

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

Sun City West, AZ Radon Testing

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

Sun City West Radon Facts

Key details about the radon risk profile for Sun City West and the 85375 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Maricopa County, AZ

Zip Code

85375

Predicted Screening Level

2–4 pCi/L (Zone 2)

Sun City West and the 85375 zip code are located in Maricopa 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 Sun City West, AZ

What EPA Radon Zone is Sun City West in?

Sun City West and the 85375 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 Sun City West?

Radon mitigation in Sun City West 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 Sun City West?

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