Casco, ME Radon Mitigation and Testing

Q: What EPA Radon Zone is Casco in?

Casco is in Cumberland County, EPA Zone 1.

Q: How much does radon mitigation cost in Casco?

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

Cumberland County

EPA Zone 1

Situated in Cumberland County within the Portland Metro area, Casco sits atop granite bedrock and glacial deposits that can produce elevated radon levels typical of Maine's geological setting. The rural community features seasonal camps and year-round homes, many with basement foundations that can accumulate radon gas from underlying bedrock. Given Maine's high radon potential and limited current testing data for this area, professional home testing is strongly recommended.

Casco, ME Radon Mitigation

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

Casco, ME Radon Testing

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

Casco Radon Facts

Key details about the radon risk profile for Casco and the 04015 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Cumberland County, ME

Zip Code

04015

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Casco and the 04015 zip code are located in Cumberland 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 Casco, ME

What EPA Radon Zone is Casco in?

Casco and the 04015 zip code are in Cumberland 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 Casco?

Radon mitigation in Casco 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 Casco?

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