Big Lake, MN Radon Mitigation and Testing

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

Based on 1 user-submitted tests, the average radon level is 7.00 pCi/L.

Q: What EPA Radon Zone is Big Lake in?

Big Lake is in Sherburne County, EPA Zone 1.

Q: How much does radon mitigation cost in Big Lake?

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

Avg: 7.00 pCi/L

Sherburne County

EPA Zone 1

1 user test

Big Lake in Sherburne County, part of the Minneapolis-St. Paul Metro area, recorded an average radon level of 7.0 pCi/L based on recent testing—significantly exceeding the EPA action threshold. This zip code 55309 community sits on glacial till deposits that create favorable conditions for radon accumulation in the full basements common to Minnesota homes. Residents should strongly consider radon mitigation systems, as the area's geological conditions and typical housing characteristics contribute to elevated indoor radon concentrations.

7.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Big Lake, MN Radon Mitigation

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

Big Lake, MN Radon Testing

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

Big Lake, Minnesota Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
7 pCi/L	Big Lake, MN	51-99 Years	Partial Basement	Jan 2020

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

Big Lake Radon Facts

Key details about the radon risk profile for Big Lake and the 55309 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Sherburne County, MN

Zip Code

55309

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

7.00 pCi/L

User Tests Submitted

Big Lake and the 55309 zip code are located in Sherburne County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Big Lake, MN

What is the average radon level in Big Lake, MN?

Based on 1 user-submitted test, the average radon level in Big Lake is 7.00 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 Big Lake in?

Big Lake and the 55309 zip code are in Sherburne 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 Big Lake?

Radon mitigation in Big Lake 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 Big Lake?

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