Longville, MN Radon Mitigation and Testing

Q: What is the average radon level in Longville, MN?

Based on 2 user-submitted tests, the average radon level is 7.50 pCi/L.

Q: What EPA Radon Zone is Longville in?

Longville is in Cass County, EPA Zone 2.

Q: How much does radon mitigation cost in Longville?

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

Avg: 7.50 pCi/L

Cass County

EPA Zone 2

2 user tests

Nestled among northern Minnesota's lake country in Cass County, Longville shows an average radon level of 7.5 pCi/L that significantly exceeds the EPA action threshold, requiring immediate attention. The area's glacial lake deposits over Precambrian granite create ideal conditions for radon accumulation, particularly in the region's many homes with full basements. Residents in zip code 56655 should prioritize professional radon testing and mitigation, especially given the community's seasonal occupancy patterns that can affect ventilation.

7.50

pCi/L average

Above EPA Action Level

Based on 2 user-submitted radon tests for homes in Longville, MN. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Longville, MN Radon Mitigation

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

Longville, MN Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Longville, Minnesota Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
7 pCi/L	Longville, MN	21-50 Years	Full Basement	Nov 2016
8 pCi/L	Longville, MN	21-50 Years	Full Basement	Jun 2015

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

Longville Radon Facts

Key details about the radon risk profile for Longville and the 56655 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Cass County, MN

Zip Code

56655

Predicted Screening Level

2–4 pCi/L (Zone 2)

Avg. User Submitted Level

7.50 pCi/L

User Tests Submitted

Longville and the 56655 zip code are located in Cass County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Longville, MN

What is the average radon level in Longville, MN?

Based on 2 user-submitted tests, the average radon level in Longville is 7.50 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 Longville in?

Longville and the 56655 zip code are in Cass 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.

How much does radon mitigation cost in Longville?

Radon mitigation in Longville 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 Longville?

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.

Most Active Radon Markets in Minnesota

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Savage	5.00 pCi/L	3
Faribault	10.00 pCi/L	2
Shakopee	6.50 pCi/L	2
Minneapolis	5.00 pCi/L	2
Lakeville	6.00 pCi/L	1
Delano	5.00 pCi/L	1
Montgomery	5.00 pCi/L	1
Rosemount	No submissions	0