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Lake Elmo, MN Radon Levels

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


Lake Elmo, MN Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
County Washington County, MN
Zip Code 55042
Avg. User Level 4.00 pCi/L
User Tests 1

Situated in Washington County east of Minneapolis-St. Paul, Lake Elmo sits atop glacial deposits that contribute to elevated radon potential throughout the region. The community's 4.0 pCi/L average reading meets the EPA action threshold, reflecting the geological conditions common to the Twin Cities metro area. Local homes, many built on full basements in glacial till soils, should prioritize radon testing regardless of construction era.

4.00
pCi/L average
Above EPA Action Level

Based on 1 user-submitted radon test for homes in Lake Elmo, MN. The EPA recommends taking action at or above 4.0 pCi/L.

0
4.0 EPA
10+

Lake Elmo, MN Radon Mitigation

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Lake Elmo, MN Radon Levels

User-submitted radon test readings from homes in the Lake Elmo area.

Radon LevelCityHome AgeFoundation
4 pCi/L Lake Elmo, MN 21-50 Years Full Basement

Have a radon test result for Lake Elmo? Submit your reading to help other homeowners.

Radon Readings Near Lake Elmo, MN

Compare radon levels in Lake Elmo with the closest nearby cities that have user-submitted test data.

CityDistanceAvg User LevelReadings
Saint Paul 10.1 mi 8.40 pCi/L 5
Cottage Grove 11.4 mi 7.00 pCi/L 2
Forest Lake 19.2 mi 4.00 pCi/L 1
Hastings 19.6 mi 8.50 pCi/L 2
Minneapolis 19.6 mi 5.00 pCi/L 2
Farmington 26.0 mi 7.50 pCi/L 2
Champlin 26.2 mi 5.00 pCi/L 2
Hopkins 26.6 mi 7.00 pCi/L 1

Washington County Radon Profile

Washington County falls in EPA Radon Zone 1, meaning the local uranium-bearing geology is predicted to drive average indoor radon screening levels above the EPA's 4 pCi/L action threshold. Homeowner-submitted tests from 6 cities in Washington County average 5.33 pCi/L across 6 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 Washington County to test, as levels can differ between neighboring homes.

Radon FAQ for Lake Elmo, MN

What is the average radon level in Lake Elmo, MN?
Based on 1 user-submitted test, the average radon level in Lake Elmo is 4.00 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.
What EPA Radon Zone is Lake Elmo in?
Lake Elmo and the 55042 zip code are in Washington 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.
How much does radon mitigation cost in Lake Elmo?
Radon mitigation in Lake Elmo 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 Lake Elmo?
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.