Spring Valley, MN Radon Levels

Q: What EPA Radon Zone is Spring Valley in?

Spring Valley is in Fillmore County, EPA Zone 1.

Q: How much does radon mitigation cost in Spring Valley?

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

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

Spring Valley, MN Radon Facts

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

County Fillmore County, MN

Zip Code 55975

Located in Fillmore County within the Rochester Metro area, Spring Valley sits in Minnesota's karst region where limestone bedrock and sinkholes create unique radon migration pathways. Testing data for ZIP code 55975 is currently limited, though the area's EPA Zone 1 designation reflects high radon potential throughout southeastern Minnesota. Professional radon testing is particularly important in karst terrain, where underground cavities can channel radon gas unpredictably into homes.

6.40

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 6.40 pCi/L, based on 5 tests from 5 nearby cities. No readings have been submitted for Spring Valley yet, so the closest recorded data is shown as a benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Spring Valley, MN 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 Spring Valley?

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Radon Readings Near Spring Valley, MN

No homeowner tests have been submitted for Spring Valley 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
Le Roy	12.5 mi	8.00 pCi/L	1
Lyle	30.1 mi	3.00 pCi/L	1
Blooming Prairie	37.6 mi	4.00 pCi/L	1
Winona	41.0 mi	10.00 pCi/L	1
Minnesota City	41.7 mi	7.00 pCi/L	1

Fillmore County Radon Profile

Because of its underlying geology, Fillmore County is mapped as EPA Radon Zone 1 — the most elevated classification — where predicted indoor screening averages exceed 4 pCi/L. Direct test data for Fillmore County remains limited, so the closest neighboring readings are used here to represent the radon conditions homeowners are likely to encounter. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Fillmore County home regardless of zone or a neighbor's results.

Radon FAQ for Spring Valley, MN

What EPA Radon Zone is Spring Valley in?

Spring Valley and the 55975 zip code are in Fillmore 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 Spring Valley?

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

Radon mitigation in Spring Valley 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 Spring Valley?

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.