Tenants Harbor, ME Radon Mitigation and Testing

Q: What EPA Radon Zone is Tenants Harbor in?

Tenants Harbor is in Knox County, EPA Zone 2.

Q: How much does radon mitigation cost in Tenants Harbor?

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

Positioned along Maine's rugged coast in Knox County, Tenants Harbor's granite bedrock and glacial till deposits create geological conditions that can support moderate radon levels in area homes. Many properties feature traditional New England construction with stone foundations or partial basements that may allow radon entry. Given the limited testing data currently available for zip code 04860, coastal residents are encouraged to test their homes to understand their specific radon exposure risk.

Tenants Harbor, ME Radon Mitigation

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

Tenants Harbor, ME Radon Testing

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

Tenants Harbor Radon Facts

Key details about the radon risk profile for Tenants Harbor and the 04860 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Knox County, ME

Zip Code

04860

Predicted Screening Level

2–4 pCi/L (Zone 2)

Tenants Harbor and the 04860 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 Tenants Harbor, ME

What EPA Radon Zone is Tenants Harbor in?

Tenants Harbor and the 04860 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 Tenants Harbor?

Radon mitigation in Tenants Harbor 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 Tenants Harbor?

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