Smithfield, ME Radon Mitigation and Testing

Q: What EPA Radon Zone is Smithfield in?

Smithfield is in Somerset County, EPA Zone 1.

Q: How much does radon mitigation cost in Smithfield?

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

Somerset County

EPA Zone 1

Set in Somerset County amid Maine's central lakes and forests region, Smithfield sits on glacial till over granite bedrock that can produce elevated radon levels throughout New England. The town's housing stock includes seasonal cottages and year-round homes, many with full basements carved into the rocky terrain typical of central Maine. Since radon testing data is currently unavailable for zip code 04978, residents should prioritize testing to understand indoor air quality levels in this EPA Zone 1 area.

Smithfield, ME Radon Mitigation

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

Smithfield, ME Radon Testing

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

Smithfield Radon Facts

Key details about the radon risk profile for Smithfield and the 04978 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Somerset County, ME

Zip Code

04978

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Smithfield and the 04978 zip code are located in Somerset 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 Smithfield, ME

What EPA Radon Zone is Smithfield in?

Smithfield and the 04978 zip code are in Somerset 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 Smithfield?

Radon mitigation in Smithfield 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 Smithfield?

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