Hawarden, IA Radon Mitigation and Testing

Q: What EPA Radon Zone is Hawarden in?

Hawarden is in Sioux County, EPA Zone 1.

Q: How much does radon mitigation cost in Hawarden?

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

Sioux County

EPA Zone 1

Positioned in Sioux County in northwest Iowa's agricultural heartland, Hawarden sits atop glacial deposits and sedimentary bedrock that contribute to Iowa's generally elevated radon potential statewide. The community's housing mix includes both historic farmstead properties and newer residential construction, with many homes featuring the full basement foundations common throughout the Upper Midwest. While specific testing data for zip code 51023 is not available, Iowa homeowners should prioritize radon testing given the state's documented high radon potential.

Hawarden, IA Radon Mitigation

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

Hawarden, IA Radon Testing

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

Hawarden Radon Facts

Key details about the radon risk profile for Hawarden and the 51023 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Sioux County, IA

Zip Code

51023

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Hawarden and the 51023 zip code are located in Sioux 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 Hawarden, IA

What EPA Radon Zone is Hawarden in?

Hawarden and the 51023 zip code are in Sioux 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 Hawarden?

Radon mitigation in Hawarden 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 Hawarden?

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