Norwalk, OH Radon Mitigation and Testing

Q: What is the average radon level in Norwalk, OH?

Based on 1 user-submitted tests, the average radon level is 3.00 pCi/L.

Q: What EPA Radon Zone is Norwalk in?

Norwalk is in Huron County, EPA Zone 1.

Q: How much does radon mitigation cost in Norwalk?

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

Avg: 3.00 pCi/L

Huron County

EPA Zone 1

1 user test

Recent testing in Norwalk, Huron County, recorded radon levels averaging 3.0 pCi/L, which falls within EPA's recommended range but still warrants attention from homeowners. This north-central Ohio community's glacial till geology over sedimentary bedrock can create variable radon conditions across different neighborhoods and soil types. Regular testing remains important for residential safety, particularly in homes with basement foundations or crawl spaces.

3.00

pCi/L average

Below EPA Action Level

Based on 1 user-submitted radon test for homes in Norwalk, OH. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Norwalk, OH Radon Mitigation

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

Norwalk, OH Radon Testing

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

Norwalk, Ohio Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
3 pCi/L	Norwalk, OH	100+ Years	Full Basement	Apr 2024

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

Norwalk Radon Facts

Key details about the radon risk profile for Norwalk and the 44857 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Huron County, OH

Zip Code

44857

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

3.00 pCi/L

User Tests Submitted

Norwalk and the 44857 zip code are located in Huron 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 Norwalk, OH

What is the average radon level in Norwalk, OH?

Based on 1 user-submitted test, the average radon level in Norwalk is 3.00 pCi/L. This is below the EPA's recommended action level of 4.0 pCi/L. However, we recommend all homes be tested regardless of your neighbor's results.

What EPA Radon Zone is Norwalk in?

Norwalk and the 44857 zip code are in Huron 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 Norwalk?

Radon mitigation in Norwalk 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 Norwalk?

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 Ohio

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

City	Avg User Radon Level	Submissions
Marietta	8.00 pCi/L	5
Cincinnati	5.20 pCi/L	5
Hilliard	11.75 pCi/L	4
Wilmington	5.25 pCi/L	4
Newark	15.00 pCi/L	3
Athens	11.33 pCi/L	3
Findlay	10.33 pCi/L	3
Perrysburg	9.67 pCi/L	3
Powell	8.33 pCi/L	3
Columbus	6.00 pCi/L	3
Chagrin Falls	4.67 pCi/L	3
Hamilton	10.00 pCi/L	2
Chardon	5.50 pCi/L	2
Strongsville	4.50 pCi/L	2
Maineville	10.00 pCi/L	1
Lancaster	9.00 pCi/L	1
West Chester	9.00 pCi/L	1
Amherst	6.00 pCi/L	1
Chillicothe	6.00 pCi/L	1
Lima	5.00 pCi/L	1