Bloomington, WI Radon Levels

Q: What EPA Radon Zone is Bloomington in?

Bloomington is in Grant County, EPA Zone 1.

Q: How much does radon mitigation cost in Bloomington?

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

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

Bloomington, WI Radon Facts

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

County Grant County, WI

Zip Code 53804

Located along the Wisconsin-Iowa border in Grant County, this rural community sits within the driftless region where unique geological formations can influence radon levels unpredictably. Despite its EPA Zone 1 designation and potential for elevated readings, comprehensive local testing data remains sparse for the 53804 area. Homeowners should prioritize radon testing, especially considering the mix of historic farmhouses and newer construction typical of southwestern Wisconsin's agricultural landscape.

17.00

pCi/L area average

Above EPA Action Level

Grant County average: 17.00 pCi/L, based on 1 user-submitted test across 1 city in the county. No homeowner readings have been submitted for Bloomington 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+

Bloomington, WI 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 Bloomington, WI

No homeowner tests have been submitted for Bloomington 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
Prairie Du Chien	15.8 mi	10.00 pCi/L	2
Potosi	16.6 mi	17.00 pCi/L	1
Blue River	30.0 mi	6.00 pCi/L	1
Viroqua	46.4 mi	5.00 pCi/L	1
Ridgeway	47.5 mi	8.00 pCi/L	1
Spring Green	47.8 mi	4.00 pCi/L	1

Grant County Radon Profile

Because of its underlying geology, Grant County is mapped as EPA Radon Zone 1 — the most elevated classification — where predicted indoor screening averages exceed 4 pCi/L. Homeowner-submitted tests from 1 city in Grant County average 17.00 pCi/L across 1 test — 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 Grant County home regardless of zone or a neighbor's results.

Radon FAQ for Bloomington, WI

What EPA Radon Zone is Bloomington in?

Bloomington and the 53804 zip code are in Grant 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 Bloomington?

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

Radon mitigation in Bloomington 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 Bloomington?

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.