Onamia, MN Radon Mitigation and Testing

Q: What EPA Radon Zone is Onamia in?

Onamia is in Mille Lacs County, EPA Zone 2.

Q: How much does radon mitigation cost in Onamia?

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

Mille Lacs County

EPA Zone 2

Located in Mille Lacs County within the Minneapolis-St. Paul metro area, Onamia sits in zip code 56359 where glacial deposits and underlying bedrock create moderate radon potential reflected in the EPA Zone 2 classification. The community's position in central Minnesota's lake country places it within geological conditions typical of the broader metro region. Testing data for this area remains limited, making individual home testing important for residents seeking to understand their radon exposure levels.

Onamia, MN Radon Mitigation

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

Onamia, MN Radon Testing

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

Onamia Radon Facts

Key details about the radon risk profile for Onamia and the 56359 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Mille Lacs County, MN

Zip Code

56359

Predicted Screening Level

2–4 pCi/L (Zone 2)

Onamia and the 56359 zip code are located in Mille Lacs 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 Onamia, MN

What EPA Radon Zone is Onamia in?

Onamia and the 56359 zip code are in Mille Lacs 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 Onamia?

Radon mitigation in Onamia 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 Onamia?

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