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Norwalk, OH Radon Levels

Check local Norwalk radon levels and find certified testing and mitigation professionals to keep your home safe


Norwalk, OH Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
County Huron County, OH
Zip Code 44857
Avg. User Level 3.00 pCi/L
User Tests 1

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.

0
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.

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Norwalk, OH Radon Levels

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

Radon LevelCityHome AgeFoundation
3 pCi/L Norwalk, OH 100+ Years Full Basement

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

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 in Ohio with the most user-submitted radon test data, ranked by number of submissions.

CityAvg User Radon LevelSubmissions
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