Sherwood, MI Radon Levels

Q: What EPA Radon Zone is Sherwood in?

Sherwood is in Branch County, EPA Zone 1.

Q: How much does radon mitigation cost in Sherwood?

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

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

Sherwood, MI Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Branch County, MI

Zip Code 49089

Located in Branch County in south-central Michigan, Sherwood sits within EPA Zone 1, where radon testing data is currently limited. The area's glacial deposits and mixed soil conditions over sedimentary bedrock can create variable radon potential in residential properties. Homeowners in zip code 49089 should consider professional radon testing, as individual readings can vary significantly even within the same neighborhood.

9.00

pCi/L area average

Above EPA Action Level

Branch County average: 9.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Sherwood 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+

Sherwood, 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 Sherwood, MI

No homeowner tests have been submitted for Sherwood 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
Coldwater	13.4 mi	9.00 pCi/L	1
Ceresco	15.4 mi	3.00 pCi/L	1
Three Rivers	20.7 mi	6.00 pCi/L	2
Battle Creek	21.4 mi	6.60 pCi/L	5
Portage	22.1 mi	3.33 pCi/L	3
Marshall	23.1 mi	8.50 pCi/L	2
Concord	32.5 mi	5.00 pCi/L	1
Mattawan	32.7 mi	4.00 pCi/L	1

Branch County Radon Profile

The bedrock and soils beneath Branch County are classified by the EPA as Radon Zone 1, the highest-risk tier, with predicted average indoor screening levels above 4 pCi/L. Homeowner-submitted tests from 1 city in Branch County average 9.00 pCi/L across 1 test — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Radon is the second leading cause of lung cancer in the United States, and a short-term test is the only way to confirm a specific home's level in Branch County.

Radon FAQ for Sherwood, MI

What EPA Radon Zone is Sherwood in?

Sherwood and the 49089 zip code are in Branch 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.

Why are radon readings shown from areas near Sherwood?

No homeowner radon tests have been submitted for Sherwood yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Branch County average—are the best available indicator of local conditions until Sherwood 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 Sherwood?

Radon mitigation in Sherwood 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 Sherwood?

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.