Topsfield, ME Radon Mitigation and Testing

Q: What EPA Radon Zone is Topsfield in?

Topsfield is in Washington County, EPA Zone 2.

Q: How much does radon mitigation cost in Topsfield?

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

Located in rural Washington County near Maine's eastern border, Topsfield (04490) currently has limited radon testing data available. The area's granite bedrock and glacial till soils are known to produce elevated radon levels throughout the region, making professional testing essential for homeowners. Given the geological conditions typical of eastern Maine, residents should prioritize radon testing regardless of their home's age or foundation type.

Topsfield, ME Radon Mitigation

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

Topsfield, ME Radon Testing

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

Topsfield Radon Facts

Key details about the radon risk profile for Topsfield and the 04490 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Washington County, ME

Zip Code

04490

Predicted Screening Level

2–4 pCi/L (Zone 2)

Topsfield and the 04490 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 Topsfield, ME

What EPA Radon Zone is Topsfield in?

Topsfield and the 04490 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 Topsfield?

Radon mitigation in Topsfield 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 Topsfield?

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