Warren, ME Radon Mitigation and Testing

Q: What EPA Radon Zone is Warren in?

Warren is in Knox County, EPA Zone 2.

Q: How much does radon mitigation cost in Warren?

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

Knox County

EPA Zone 2

Coastal Knox County is home to Warren, where granite bedrock formations typical of midcoast Maine create naturally elevated radon potential throughout the region. While community-specific testing data remains sparse, the underlying geology strongly suggests the need for comprehensive radon testing. The area's mix of historic homes and newer construction, combined with Maine's challenging radon landscape, makes testing essential regardless of home age or foundation type.

Warren, ME Radon Mitigation

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

Warren, ME Radon Testing

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

Warren Radon Facts

Key details about the radon risk profile for Warren and the 04864 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Knox County, ME

Zip Code

04864

Predicted Screening Level

2–4 pCi/L (Zone 2)

Warren and the 04864 zip code are located in Knox 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 Warren, ME

What EPA Radon Zone is Warren in?

Warren and the 04864 zip code are in Knox 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 Warren?

Radon mitigation in Warren 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 Warren?

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 Maine

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

City	Avg User Radon Level	Submissions
Rumford	5.67 pCi/L	3
York	8.50 pCi/L	2
Saco	7.50 pCi/L	2
Hampden	4.50 pCi/L	2
Scarborough	14.00 pCi/L	1
Kittery	12.00 pCi/L	1
South Portland	10.00 pCi/L	1
Portland	4.00 pCi/L	1