Calais, ME Radon Mitigation and Testing

Q: What EPA Radon Zone is Calais in?

Calais is in Washington County, EPA Zone 2.

Q: How much does radon mitigation cost in Calais?

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

Washington County

EPA Zone 2

Positioned along the Canadian border in eastern Washington County, Calais sits atop granite bedrock formations characteristic of coastal Maine's geological landscape. The community's housing stock includes many older homes with stone foundations that could facilitate radon entry from the underlying bedrock. Since testing data for zip code 04619 remains limited, residents should test their homes to understand their individual radon exposure risk.

Calais, ME Radon Mitigation

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

Calais, ME Radon Testing

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

Calais Radon Facts

Key details about the radon risk profile for Calais and the 04619 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Washington County, ME

Zip Code

04619

Predicted Screening Level

2–4 pCi/L (Zone 2)

Calais and the 04619 zip code are located in Washington 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 Calais, ME

What EPA Radon Zone is Calais in?

Calais and the 04619 zip code are in Washington 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 Calais?

Radon mitigation in Calais 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 Calais?

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