Waterloo, IA Radon Mitigation and Testing

Q: What is the average radon level in Waterloo, IA?

Based on 4 user-submitted tests, the average radon level is 8.50 pCi/L.

Q: What EPA Radon Zone is Waterloo in?

Waterloo is in Black Hawk County, EPA Zone 1.

Q: How much does radon mitigation cost in Waterloo?

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

Avg: 8.50 pCi/L

Black Hawk County

EPA Zone 1

4 user tests

This Black Hawk County community shows an average radon level of 8.5 pCi/L, more than double the EPA action level across multiple zip codes. Iowa's glacial drift soils over limestone bedrock create high radon potential, and Waterloo's predominantly basement-equipped housing stock allows for significant radon accumulation in living spaces.

8.50

pCi/L average

Above EPA Action Level

Based on 4 user-submitted radon tests for homes in Waterloo, IA. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Waterloo, IA Radon Mitigation

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

Waterloo, IA Radon Testing

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

Waterloo, Iowa Radon Levels

User-submitted radon test readings from homes in the Waterloo area.

Radon Level	City	Home Age	Foundation	Submitted
12 pCi/L	Waterloo, IA	21-50 Years	Full Basement	Mar 2025
8 pCi/L	Waterloo, IA	21-50 Years	Full Basement	May 2022
4 pCi/L	Waterloo, IA	21-50 Years	Full Basement	Mar 2021
10 pCi/L	Waterloo, IA	21-50 Years	Full Basement	Jun 2020

Have a radon test result for Waterloo? Submit your reading to help other homeowners.

Waterloo Radon Facts

Key details about the radon risk profile for Waterloo and the 50701 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Black Hawk County, IA

Zip Code

50701

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

8.50 pCi/L

User Tests Submitted

Waterloo and the 50701 zip code are located in Black Hawk 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 Waterloo, IA

What is the average radon level in Waterloo, IA?

Based on 4 user-submitted tests, the average radon level in Waterloo is 8.50 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.

What EPA Radon Zone is Waterloo in?

Waterloo and the 50701 zip code are in Black Hawk 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 Waterloo?

Radon mitigation in Waterloo 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 Waterloo?

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