Webster, MN Radon Levels

Q: What EPA Radon Zone is Webster in?

Webster is in Rice County, EPA Zone 1.

Q: How much does radon mitigation cost in Webster?

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

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

Webster, MN Radon Facts

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

County Rice County, MN

Zip Code 55088

Located in Rice County south of the Twin Cities, Webster's position in Minnesota's glacial landscape creates high radon potential typical of the region. The community serves zip code 55088 with predominantly single-family homes, many featuring full basements where radon accumulation occurs most readily. Although specific testing data isn't currently available, Minnesota's statewide radon concerns make professional testing essential for all residential properties.

7.25

pCi/L area average

Above EPA Action Level

Rice County average: 7.25 pCi/L, based on 4 user-submitted tests across 2 cities in the county. No homeowner readings have been submitted for Webster 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+

Webster, MN 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 Webster, MN

No homeowner tests have been submitted for Webster 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
Elko New Market	5.2 mi	3.00 pCi/L	1
New Prague	10.1 mi	9.00 pCi/L	2
Montgomery	10.8 mi	5.00 pCi/L	1
Northfield	11.0 mi	4.50 pCi/L	2
Lakeville	13.5 mi	6.00 pCi/L	1
Prior Lake	14.6 mi	5.00 pCi/L	1
Faribault	15.1 mi	10.00 pCi/L	2
Farmington	15.9 mi	7.50 pCi/L	2

Rice County Radon Profile

Because of its underlying geology, Rice 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 2 cities in Rice County average 7.25 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 Rice County home regardless of zone or a neighbor's results.

Radon FAQ for Webster, MN

What EPA Radon Zone is Webster in?

Webster and the 55088 zip code are in Rice 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 Webster?

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

Radon mitigation in Webster 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 Webster?

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.