Sparta, MI Radon Levels

Q: What EPA Radon Zone is Sparta in?

Sparta is in Kent County, EPA Zone 2.

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

No homeowner radon tests have been submitted for Sparta yet, so readings from the closest cities and the Kent 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 Sparta?

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

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

Sparta, MI Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Kent County, MI

Zip Code 49345

Part of the Grand Rapids Metro, Sparta sits in Kent County where glacial till deposits create western Michigan's rolling terrain. The 49345 area features predominantly single-family homes with full basement foundations typical of the region's construction practices. Limited radon testing data underscores the need for individual home assessment to establish baseline readings for properties in this glacially-influenced landscape.

4.00

pCi/L area average

Above EPA Action Level

Kent County average: 4.00 pCi/L, based on 4 user-submitted tests across 4 cities in the county. No homeowner readings have been submitted for Sparta 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+

Sparta, 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 Sparta, MI

No homeowner tests have been submitted for Sparta 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
Rockford	9.4 mi	5.00 pCi/L	1
Grant	14.4 mi	13.00 pCi/L	1
Grand Rapids	14.6 mi	3.00 pCi/L	1
Wyoming	17.8 mi	4.00 pCi/L	1
Allendale	17.8 mi	5.00 pCi/L	1
Jenison	18.8 mi	4.00 pCi/L	2
Hudsonville	22.0 mi	12.00 pCi/L	1
Byron Center	24.9 mi	4.00 pCi/L	1

Kent County Radon Profile

EPA mapping assigns Kent County to Radon Zone 2, indicating moderate predicted indoor screening levels in the 2 to 4 pCi/L range based on regional geology. Homeowner-submitted tests from 4 cities in Kent County average 4.00 pCi/L across 4 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 Kent County home regardless of zone or a neighbor's results.

Radon FAQ for Sparta, MI

What EPA Radon Zone is Sparta in?

Sparta and the 49345 zip code are in Kent County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

Why are radon readings shown from areas near Sparta?

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

Radon mitigation in Sparta 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 Sparta?

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.