Clear Lake, IA Radon Mitigation and Testing

Q: What EPA Radon Zone is Clear Lake in?

Clear Lake is in Cerro Gordo County, EPA Zone 1.

Q: How much does radon mitigation cost in Clear Lake?

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

Cerro Gordo County

EPA Zone 1

Located in Cerro Gordo County on Iowa's glacial prairie, Clear Lake sits atop deep glacial deposits that can contribute to radon accumulation in the region's predominantly basement-equipped homes. Testing data is currently unavailable for this 50428 community, highlighting the importance of individual testing. The area's mix of early-to-mid 20th century homes and newer lake properties often feature full basements where radon concentrations can build without proper ventilation.

Clear Lake, IA Radon Mitigation

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

Clear Lake, IA Radon Testing

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

Clear Lake Radon Facts

Key details about the radon risk profile for Clear Lake and the 50428 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Cerro Gordo County, IA

Zip Code

50428

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Clear Lake and the 50428 zip code are located in Cerro Gordo County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Clear Lake, IA

What EPA Radon Zone is Clear Lake in?

Clear Lake and the 50428 zip code are in Cerro Gordo County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

How much does radon mitigation cost in Clear Lake?

Radon mitigation in Clear Lake 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 Clear Lake?

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 Iowa

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

City	Avg User Radon Level	Submissions
Waterloo	8.50 pCi/L	4
Ames	9.67 pCi/L	3
Fairfield	14.00 pCi/L	2
Mount Pleasant	12.00 pCi/L	2
Ottumwa	5.50 pCi/L	2
Iowa City	7.00 pCi/L	1
Muscatine	No submissions	0