Grand Marsh, WI Radon Levels

Q: What EPA Radon Zone is Grand Marsh in?

Grand Marsh is in Adams County, EPA Zone 2.

Q: How much does radon mitigation cost in Grand Marsh?

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

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

Grand Marsh, WI Radon Facts

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

County Adams County, WI

Zip Code 53936

Situated in rural Adams County among Wisconsin's central sand counties, Grand Marsh currently lacks sufficient radon testing data to establish local averages. The area's sandy soils and glacial outwash deposits can create variable radon conditions across different properties. Residents in zip code 53936 are encouraged to conduct radon testing to determine their home's specific risk level.

13.00

pCi/L area average

Above EPA Action Level

Adams County average: 13.00 pCi/L, based on 2 user-submitted tests across 2 cities in the county. No homeowner readings have been submitted for Grand Marsh 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+

Grand Marsh, WI Radon Mitigation

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

Need Radon Mitigation or Testing in Grand Marsh?

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Radon Readings Near Grand Marsh, WI

No homeowner tests have been submitted for Grand Marsh 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
Friendship	8.9 mi	20.00 pCi/L	1
Coloma	14.3 mi	17.00 pCi/L	1
Hancock	18.8 mi	5.00 pCi/L	1
Necedah	20.3 mi	7.50 pCi/L	2
Wautoma	25.1 mi	15.00 pCi/L	1
Portage	26.1 mi	9.00 pCi/L	1
Reedsburg	28.5 mi	5.00 pCi/L	1
Nekoosa	28.7 mi	6.00 pCi/L	1

Adams County Radon Profile

The soils and bedrock of Adams County place it in EPA Radon Zone 2, a moderate-risk classification with predicted indoor averages of 2 to 4 pCi/L. Homeowner-submitted tests from 2 cities in Adams County average 13.00 pCi/L across 2 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Adams County to test, as levels can differ between neighboring homes.

Radon FAQ for Grand Marsh, WI

What EPA Radon Zone is Grand Marsh in?

Grand Marsh and the 53936 zip code are in Adams 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 Grand Marsh?

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

Radon mitigation in Grand Marsh 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 Grand Marsh?

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.