Waldo, OH Radon Mitigation and Testing

Q: What EPA Radon Zone is Waldo in?

Waldo is in Marion County, EPA Zone 1.

Q: How much does radon mitigation cost in Waldo?

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

Marion County

EPA Zone 1

Part of Marion County within the greater Columbus metropolitan area, Waldo lies in Ohio's glacial till region where dense clay soils overlay limestone bedrock. This geological combination creates favorable conditions for radon production and migration into homes with basement foundations. Since testing data remains unavailable for zip code 43356, homeowners should conduct radon testing given the area's Zone 1 EPA classification and Ohio's well-documented radon potential.

Waldo, OH Radon Mitigation

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

Waldo, OH Radon Testing

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

Waldo Radon Facts

Key details about the radon risk profile for Waldo and the 43356 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Marion County, OH

Zip Code

43356

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Waldo and the 43356 zip code are located in Marion 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 Waldo, OH

What EPA Radon Zone is Waldo in?

Waldo and the 43356 zip code are in Marion 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 Waldo?

Radon mitigation in Waldo 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 Waldo?

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