Niles, MI Radon Levels

Q: What EPA Radon Zone is Niles in?

Niles is in Berrien County, EPA Zone 3.

Q: Why are radon readings shown from areas near Niles?

No homeowner radon tests have been submitted for Niles yet, so readings from the closest cities and the Berrien County average are used as the best available indicator of local conditions. The EPA recommends testing every individual home.

Q: How much does radon mitigation cost in Niles?

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

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

Niles, MI Radon Facts

EPA Radon Zone Zone 3 — Low Risk < 2.0 pCi/L (Zone 3)

County Berrien County, MI

Zip Code 49120

Located in southwestern Michigan's Berrien County, Niles sits in an area where glacial deposits over limestone bedrock can create conditions conducive to radon accumulation. The community's mix of historic homes and modern construction means foundation types vary significantly across neighborhoods. With limited testing data currently available, homeowners in zip code 49120 are encouraged to conduct radon testing to establish baseline levels for their properties.

4.00

pCi/L area average

Above EPA Action Level

Berrien County average: 4.00 pCi/L, based on 2 user-submitted tests across 2 cities in the county. No homeowner readings have been submitted for Niles itself yet, so this county figure is the closest available benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Niles, MI Radon Mitigation

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

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Radon Readings Near Niles, MI

No homeowner tests have been submitted for Niles yet. The closest cities with user-submitted radon data are shown below — explore them to gauge local conditions. Radon varies by home, so testing is the only way to know your level.

City	Distance	Avg User Level	Readings
Saint Joseph	20.9 mi	2.00 pCi/L	1
Coloma	26.8 mi	6.00 pCi/L	1
Three Rivers	32.3 mi	6.00 pCi/L	2
Paw Paw	33.5 mi	4.00 pCi/L	1
Mattawan	37.1 mi	4.00 pCi/L	1
Portage	42.1 mi	3.33 pCi/L	3

Berrien County Radon Profile

The EPA maps Berrien County as Radon Zone 3, the lowest predicted classification, with modeled indoor screening levels under 2 pCi/L. Homeowner-submitted tests from 2 cities in Berrien County average 4.00 pCi/L across 2 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Berrien County home regardless of zone or a neighbor's results.

Radon FAQ for Niles, MI

What EPA Radon Zone is Niles in?

Niles and the 49120 zip code are in Berrien County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.

Why are radon readings shown from areas near Niles?

No homeowner radon tests have been submitted for Niles yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Berrien County average—are the best available indicator of local conditions until Niles homeowners submit their own results. The EPA still recommends testing every individual home, since levels can vary significantly from house to house.

How much does radon mitigation cost in Niles?

Radon mitigation in Niles 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 Niles?

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.